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Introduction to Computers
Introductory Chapters - What is a computer & How does it work?
154
Computer Science
Undergraduate 1
04/12/2013

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Term
What do you call the removable disk, usually 4.75 inches in diameter and less than one-twentieth of an inch thick.
Definition
An Optical Disk
Term
What part of the computer temporarily stores instructions and data that the processor is likely to use frequently. It speeds up processing.
Definition
Cache
Term
What do you call the electrical data roadways through which bits are transmitted within the CPU and between the CPU and other components of the motherboard?
Definition
Buses - data roadways (bus lines)
Term
What is the high-speed storage area that temporarily stores data during processing?
Definition
Register
Term
What do you call the brain of the computer which follows the instructions of the software program to manipulate data into information?
Definition
Computer Processing Unit (CPU)
Term
What do you call the control unit which uses arithmetic (logic unit (ALU)), it contains the register & high speed storage.
Definition
Computer Processing Unit (CPU)
Term
What do you call the special kind of mathematical calculation, which is used mainly with supercomputers? The measure is used to express the processing speed of supercomputers.
Definition
Floating Point Operations Per Section (FLOPS)
Term

Port...fast data...seven devices in a daisy chain...32-bits at a time.

 

What port allows you to transmit fast data to up to seven devices in a daisy chain. Uses a small computer interface processing at 32-bits at a time.

 

Definition
SCSI (Scuzzy)
Term
What port allows you to transmits fast data over short distances. A line which allows 8 bits (1 byte) to be transmitted simultaneously.
Definition
Parallel Port
Term
What is the name for the connector which is a line that sends bits one after another, like cars on a one-lane highway? It is usually used to connect devices that do not require fast transmission of data, such as keyboards, mice, monitors, and modems.
Definition
Serial Port
Term
What ports are used for special purposes such as round ports for connecting the keyboard and mouse?
Definition
Dedicated Ports
Term
What do you call that part of a computer where a user can connect a socket or jack on the outside of the system?
Definition
Port
Term
What do you call the software updates which make small changes to the existing software already loaded on your CPU?
Definition
Software Revision
Term
What is the name for software which is made available as an add or addition to existing software already on your system? Usually identified after a decimal point.
Definition
Software Release
Term
What is the name of the software license that only permits the software to be used by one user at a time?
Definition
Single-User Software License
Term
This type of software license allows a specified number of copies to be used at one time. It may require additional license monitoring software?
Definition
Concurrent-User License
Term
What is the name of the type of software license which allows software to be used on all the computers at a specific location?
Definition
Site-License
Term
What is the term for a signed contract in which the user agrees not to make copies or distribute the purchased copy of the software to other users?
Definition
Software License
Term
Name some examples of creators of Master Operating Systems?
Definition
Microsoft, Unix, Linux
Term
What is another name for the Master Control program that runs the computer?
Definition
Master Operating System
Term
What are the two major types of software utilized on a computer?
Definition
Systems software and Applications software
Term
What do you call the ability for any user, on a given email system, to send a message and have it pop up instantly on the screen of anyone else logged in to the system?
Definition
Instant Messaging - one on one
Term
What type of computer virus uses trusted institutional names to elicit confidential information? Some common schemes look like they are from your bank or from eBay and ask you to updates your account and then capture your personal data for their own use.
Definition
Phishing
Term
What type of computer virus, similar to Phishing, in which malicious software is implanted on a victim's computer that redirects the user to an imposter web page even when the individual types the correct address into his or her browser.
Definition
Pharming
Term
What application downloads without the users knowledge. It hides on the users computer and captures information about what's on the users P.C..
Definition
Spyware
Term
What do you call the ability for one user to do multiple things on a computer simultaneously?
Definition
Multi-tasking
Term
What is the name for the typed discussion among participants who are online at the same time. It is just like having a telephone conversation, except that the messages are typed rather than spoken.
Definition
Real-Time Chat
Term
What type of computer virus sends out forged emails that direct recipients to a replica of an existing web page, both of which pretend to belong to a legitimate company then entices you to provide your personal information?
Definition
Phishing (Password Harvesting Fishing)
Term
What is the term for technology that helps to produce, manipulate, store, communicate, and/or disseminate information?
Definition
Information Technology (IT)
Term
What are the three types of Internet Access Providers?
Definition
1. Internet Service Provider
2. Commercial Online Service
3. Wireless Internet Service Provider
Term
In what ways can a user connect to the internet?
Definition
Telephone line, cable hookup, or wireless device - examples which include: Dial-up connection (modem), ISDN, DSL, or T1 line
Term
What is another name for Communications Technology?
Definition
Telecommunications Technology
Term
What consists of electromagnetic devices and systems for communicating over long distances?
Definition
Telecommunications or Communications Technology
Term
What is the name of the forgery of an email sender name so that the message appears to have originated from someone or somewhere other than the actual source?
Definition
Spoofing
Term
What is the step-by-step electronically encoded instructions that tell the computer hardware how to perform a task?
Definition
Software
Term
1 byte equals how many characters
Definition
1 character
Term
1 kilobyte equals how many characters
Definition
1,024 characters
Term
1 Megabyte equals how many characters
Definition
1,048,576 characters
Term
1 Gigabyte equals how many characters
Definition
1 billion characters
Term
1 Terabyte equals how many characters
Definition
1 trillion characters
Term
1 Petabyte equals how many characters
Definition
1 quadrillion characters
Term
What is the name for the measurement of characters within a CPU?
Definition
Data Storage Capacity
Term
What is the name for the Specialized Software programs, usually components of systems software - that allows input and output devices to communicate with the rest of the computer system?
Definition
Device Drivers
Term
What is the term for all the machinery and equipment in a CPU? This includes the keyboard, screen, and printer
Definition
Hardware
Term
What is the communications system connecting two or more computers?
Definition
Network
Term
What is the name for the data that has been summarized or otherwise manipulated for use in decision making?
Definition
Information
Term
What is the term for raw facts and figures that are processed into information?
Definition
Data
Term
What are the five sizes of computers and their associated costs?
Definition
1. Supercomputer $1M - $350M
2. Mainframe $5K - $5M
3. Workstations
4. Microcomputers $5H - $5K
5. Microcontrollers
Term
What is the term for a worldwide computer network that connects hundreds of thousands of smaller networks?
Definition
The Internet
Term
Who owns the internet?
Definition
Nobody & everybody
Term
What is the term for that which encompasses not only the online world, and the internet in particular, but also the whole wired and wireless world of communications in general?
Definition
Cyberspace
Term
What is the term to describe high-capacity machines with thousands of processors that can perform more than several trillion calculations per second?
Definition
Super-computers
Term
What is the term used to describe molecule-sized nano-structures which are used to create tiny machines for holding data that performs tasks?
Definition
Nano Technology
Term
What is the term for water or air cooled computers that cost $5K - $5M and vary in size from micro to super-sized systems.
Definition
Mainframes. Small mainframes can cost between $5K - $200K
Term
What is the term that connects, usually by specialized cables, a group of desktop PCs and other devices, such as printers, in an office or building?
Definition
Local Are Network (LAN)
Term
What is the term used to describe the expensive, powerful personal computer that usually is used for complex scientific, mathematical and engineering calculations and for computer-aided design and computer-aided manufacturing?
Definition
Workstations
Term
What is the term used to describe embedded computer with tiny specialized microcomputers installed in "smart" appliances and automobiles?
Definition
Microcomputers
Term
Name the parts of a CPU?
Definition
Case: memory chips, motherboard, processor chips, power supply and wireless device
Term
What term is used to describe the use of a computer or other information device to connect to a network?
Definition
On-line
Term
What is a programmable multi user machine that accepts data (or raw facts and figures) and processes, or manipulates it into information the user can utilize?
Definition
A computer
Term
What are the two most important part of Information Technology?
Definition
The computer and communications
Term
Name the different type of printers available for output?
Definition
Impact Printers, Laser Printers, Inkjet Printers, Thermal Printers
Term
What printer forms images or characters by striking a print hammer or wheel again an ink ribbon?
Definition
Impact Printer
Term
What type of printer uses a drum of toner like a photocopier and uses PDL, PostScript and PCL for printing management?
Definition
Laser Printers
Term
Which type of printer sprays ink from four nozzels at high speed, is quiet, and produces inexpensive color-printers?
Definition
Inkjet
Term
Which type of printer provides low-medium resolution and uses thermal paper that darkens in time?
Definition
Thermal Printer
Term
How can you speed up processing on your computer?
Definition
Use Disk Clean Up and Disk De-fragmentation to clean up unnecessary files and space on the computer.
Term
What are the four different types of memory chips?
Definition
RAM, ROM, CMOS, & Flash
Term
What are the four different types of RAM?
Definition
DRAM, SDRAM, SRAM, DDR-SDRAM
Term
What is RAM?
Definition
Random Access Memory (RAM) temporarily stores program instructions and data before it is processed by the CPU.
Term
RAM is considered Volatile Memory, what does Volatile Memory mean?
Definition
the contents stored within the RAM are lost when the power goes off or is turned off
Term
What type of memory chip stores fixed start-up instructions?
Definition
ROM
Term
What type of memory chip stores flexible start-up instructions
Definition
CMOS
Term
Which memory chip stores flexible programs?
Definition
Flash Memory Chips
Term
What are some ways to speed up processing on your computer?
Definition
Interleaving, bursting, pipe-lining, superscaler architecture, and hyper threading
Term
In terms of computer advancement, name some of the future areas of processing for which computers might be used?
Definition
M-RAM, OUM, Nanotechnology, Optical Computing, DNA Computing, Quantum Computing
Term
The mouse is the principle pointing tool used with a CPU, what are some others methods of data entry on a CPU?
Definition
Trackball, Pointing Stick, Touchpad, Keyboard
Term
What are the four different types of bar code readers?
Definition

MICR - Magnetic Ink

OMR - Optical Mark Recognition

OCR - Optical Charcater Recognition
MICRO2MCR

 

1. Flatbed 2. Sheet-feed 3. Handheld 4. Drum

Term
What is the term used to describe photoelectric (optical) scanners that translate the symbols in the bar code into digital code?
Definition
Bar-code reader
Term
What is the name given to describe an input device that collects specific data directly from the environment and transmits it to a computer?
Definition
Sensor
Term
What is the term used to describe the amount of space between the centers of adjacent pixels, the closer the pixels, the crisper the image?
Definition
Dot Pitch
Term
What is the term used to describe image sharpness of the display screen, the more pixels, or dots' there are per square inch, the finer the level of detail?
Definition
Resolution
Term
What is the term used to describe the number of times per second that the pixels are recharged so that their glow remains bright?
Definition
Refresh Rate
Term
There are two different kinds of matrices what are they?
Definition
Active Matrix and Passive Matrix
Term
This type of matrix is also known as TFT display, each pixel on the flat-panel screen is controlled by its own transistor. What is it?
Definition
Active Matrix Screens - which are much brighter and sharper than passive matrix screens
Term
This term describes the translator which controls the whole row or column of pixels on the flat-screen display.
Definition
Passive Matrix
Term
What do you call the type of software was developed to solve a particular problem, perform useful work on general-purpose tasks, or provide entertainment?
Definition
Applications Software
Term
What is another name for System Board?
Definition
Motherboard
Term
What are the two different kinds of files on a computer?
Definition
Program and Data
Term
What are the six different types of Computer-Based Information Systems?
Definition
Office Information Systems
Transaction Processing System
Management Information Systems
Decision Support Systems
Executive Support Systems
Expert Systems
Term
Which level of management uses a Office Information or Office Automation Systems?
Page 428 - 433
Definition
Used throughout the organizational structure to increase productivity.
Term
Which level of management uses a Transaction Processing System (TPS)?
Definition
Business organization, keeps track of transactions
Term
Which level of management uses a Management Information System (MIS)?
Definition
Tactical managers, to produce reports
Term
Which level of management uses a Decision Support System (DSS)?
Definition
Used by managers in specific industries such as airlines or industry, flexible tools for analysis
Term
Which level of management uses an Executive Support System (ESS)?
Definition
Strategic Managers, specifically supports strategic decision making
Term
Which level of management uses an Expert System?
Definition
Knowledge-based system, used by all management levels to solve "expert" problems
Term
How is digital data sent over a telephone line?
Pg 314
Definition
Digital signals are discontinuous, expressed as discrete bursts of on/off electrical pulses.
Term
How is Twisted-Pair media assembled?
Pg. 325 - 327
Definition
Two strands of insulated copper wire, twisted around each other. Helps reduce interference.
Term
How is Coax media assembled?
Definition
co-ax is HF transmission cable that consists of insulated copper wire wrapped in a solid or braided metal shield and then in an external plastic cover.
Term
How is Fiber-Optic media assembled?
Definition
dozens or hundreds of thin strands of glass or plastic that transmit pulsating beams of light rather than electricity.
Term
What is Ethernet?
Pg. 326
Definition
Cat5 cabling, Ethernet speeds of 10-100 MGs per second . Installed throughout the house. Think RR
Term
What is HomePNA?
Definition
technology companies working to ensure the adoption of a single unified existing wire (telephone and cable) to home-networking standard that transmits about 320 MG per second.
Term
What is Homeplug?
Definition
A technology standard that allows users to send data over home's existing electrical (AC) power lines.
Term
What are the major phases of the system lifecycle?
Definition
1. Preliminary Investigation,
2. System Analysis,
3. System Design,
4. System Development,
5. System Implementation,
6. System Maintenance
Term
What are the main components of a network?
Definition
Wired/Wireless Connections
Host & Nodes
Packets
Protocols
Linking Devices
Interface Cards
Operating Systems
Term
What are the different type of short-distance wireless standards?
Definition
1. LAN 100-228 feet
2. PAN 30-32 feet
3. HAN 100-150 feet
Term
What are the different types network topologies?
Definition
Bus – all nodes are connected to a single wire or cable
Ring – all nodes are connected in a continuous loop
Star – all nodes are connected through a central host
Term
Describe a BUS network topologies?
Definition
All nodes are connected to a single wire or cable
Term
Describe a Ring network topologies?
Definition
All nodes are connected in a continuous loop
Term
Describe a Star network topologies?
Definition
All nodes are connected through a central hose
Term
Describe a Peer-to-Peer Network.
Definition
All computers on a network communicate directly with each other. Cheaper than client/server since servers are typically more expensive than PCs
Term
Describe a Client/Server Network.
Definition
Consists of clients (computers) that request data, and servers (computers) that supply data
Term
What are the problems associated with Peer-to-Peer swapping of music files?
Definition
Users can download copyrighted material w/o paying, violates U.S. copyright laws; is server-based online file sharing sites; Napster has been shut down; have been difficult to control since there is no central server to shut down; publishers are suing individual down-loaders instead
Term
What are the different types of database models?
Definition
Hierarchical database
Network database
Relational database
Object-oriented database
Multidimensional database
Term
What is a Hierarchical database?
Definition
Fields or records are arranged in a family tree, with child records subordinate to parent or higher-level records
Term
What is a Network database?
Definition
Like a hierarchical database, but each child record can have more than one parent record
Term
What is a Relational database?
Definition
Relates, or connects, data in different files through the use of a key, or common data element
Term
What is an Object-Oriented database?
Definition
Uses objects (software written in small, reusable chunks) as elements within database files
Term
What is a Multidimensional database?
Definition
Models data as facts, dimensions, or numerical measures for use in the interactive analysis of large amounts of data
Term
What is the difference between a bit and a byte?
Definition
A bit is a single numeric value, either '1' or '0'. A byte is a sequence of bits; usually eight bits equal one byte.
Term
What are considered computer crimes?
Definition
Theft of HW/SW, online music/videos,
Theft of time & services, Theft of information, Internet-related fraud
Taking over your PC, Crimes of malice
Computer criminals
Term
What is the term used when you use human language to map out the logic of a computer program?
Definition
Pseudo code or flow charting
Term
What SW helps manage databases?
Definition
DBMS
Term
What's the difference between syntax and logic errors?
Definition
Syntax errors are grammar errors while logic errors are caused by the incorrect use of control structures
Term
What is a Bridge?
Definition
An interface used to connect the same types of networks
Term
What is a Gateway?
Definition
An interface that permits communications between dissimilar networks
Term
What is a Node?
Definition
Any device attached to a network
Term
What title is given to someone who manages a database?
Definition
DBA
Term
What are daily business activities called?
Definition
Term
What is Business-to-business (B2B)?
Definition
A business sells to other businesses using the internet or a private network to cut transaction costs and increase efficiencies
Term
What is Business-to-consumer (B2C)?
Definition
A business sells goods or services to consumers
Term
What is Consumer-to-consumer (C2C)?
Definition
Consumers sell goods or services directly to other consumers with the help of a third party, such as eBay.
Term
What are the two different kinds of files on a computer?
Definition
Program and Data
Term
What is it called to build a quick model of a system that can be evaluated?
Definition
Prototype (then a detailed design development)
Term
What are some useful programs to block harmful content from children?
Definition
Online blocking SW, DVD filters, video game rating systems, v-chip, "xxx" web addresses
Term
What is the difference between a UNIT test and SYSTEM Test?
Definition
A Unit Test - tests small parts independently (small pieces of the whole) to make sure they work.
A SYSTEM Test - tests the entire system
Term
Machine language is what generation?
Definition
First generation
Term
Assembly language is what generation?
Definition
Second generation
Term
high level languages such as FORTRAN, COBOL, BASIC, C, and C++ are what generation?
Definition
Third generation (procedural language)
Term
Very High-Level languages which include SQL, Intellect, NOMAD, FOCUS are what generation?
Definition
Fourth generation
Term
Natural languages are which generation?
Definition
Fifth generation, early 1980's
Term
Who developed Basic (the easy language) - which is used to be the most popular microcomputer language and is considered the easiest language to learn?
Definition
Developed by John Kemeny and thomas Kurtz
Term
Who developed Pascal, an alternative to BASIC developed for teaching purposes?
Definition
Developed by 17th Century French mathematician Blaise Pascal
Term
Who developed C, the general-purpose, compiled language that was developed for mid-range computers but also works well with micro-computers?
Definition
Developed by Dennis Ritchie at Bell Labs in the early 1970's.
Term
Who developed LISP, a 3rd generation language used principally to construct artificial intelligence programs?
Definition
Developed by the Massachusetts Institute of Technology in 1958 by mathematician John McCarthy.
Term
What programming languages are object-oriented?
Definition
Case SW, Java, C#, LISP, Visual Basic, C++
Term
What is Machine Language?
Definition
0's and 1's (basic language)
Term
What is Assembly Language?
Definition
Mnemonic version of machine language, faster, each CPU arch has it's own language
Term
What is High-Level Language?
Definition
FORTRAN, COBOL, BASIC, C
Term
What is Problem Oriented Language?
Definition
NOMAD, FOCUS, Report Generator, Query, Application
Term
What is a Natural Language?
Definition
uses human language
Term
What is a protocol?
Definition
Also called communications protocol; set of conventions governing the exchange of data between HW/SW components.
Term
What attack represents a communication that appears to be from a trusted source?
Definition
Phishing
Term
How would you identify a record in a relational database?
Definition
by using a query
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