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Central Processing Unit( CPU)

Arithmetic logic unit (ALU)

Memory unit

RAM

ROM

CPU- The processor

ALU- Is the sector of the CPU that performs the mathematical calculations that are required in many data processing programs

Memory unit- Allows storage of information,is internal to the computer, and is diveided into two types of memory RAM and ROM

RAM-Is the temporary memory that is designed to hold new data and is available only while the computer is turned on

ROM- Is the permanent internal memory iside the systen, is inaccessibly by the user, and is used to store the instructions that are installed or programmed at the manufacturer

Bits[image]

Bytes

Input devices

Output devices

Storage devices

Bits- Is the smallest unit of binary information (8 bites=1 bytes)

Bytes- Can represent one alphabetic or one numberic chatacter of information

Input devices- Allow the input data into the computer. EX: keyboards, mice, scanners, graphics tablets, microphones, digital cameras, PDAs,Web cam, electronic whiteboards, clickers, and cell phones

Output devices- Produce the data after it has been processed in hard copy or soft copy.Ex: texted documents, graphics, or multimedia. It is commonly found in classrooms, includes computer monitos, printers, speakers, projection unit, document cameras, interactive whiteboards, and portable media player

Storage devices-Allow storage of data for later use. Includes internal storage options( hard disk drive) and external storage options(DVD, CD, USB) 

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Port

Parallel port

USB port

Ethernet port

Firewire port

Port- Any device that is used to communicate with a computer system and the connection is made through an opening

Parallel port- Is used to connect a computer to a printer

USB port- Universal way to connect an array of devices and provide faster transfer of information to printers, scanners, digital cameras, storage drives,modems,speakers, and other devices

Ethernet port- Is used for high-speed cooneciton to the internet or another network. Ex: intranet or internal network

Firewire port- Provide a very fast connection to transfer large amounts of data quickly

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Computer monitors ( screens or displays)

Monitor size

Alternate keyboards

keyguards

moisture guards

The most common output device. They display information on the scree, where it can be edited and sent to the priter.

Is measured diagonally from corner to corner

It offer input options in size, layout, and complexity

Hard plastic covers with holes for each key

Thin sheets of plastic that protect keyboards from spills and any unwanted liquid

Adjustable wand or stick

PAC mate

Braille translator

Anti-glare filters

Monitor mounts[image]

Is designed for students who cannot used their hands to access the keyboard

Is a PDA designed for blind or low-vision users

A software product that converts text, either obtained by scanning or produced by a word processor into braille

Clear screens that fit over a computer monitor to reduce glare from overhead lights and large windows

Allow the placement of the monitor in the more easily seen position

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Document cameras

Storage services

Lumens

Speakers

Portable media players

They display slides, transparencies, text, documents, 3D objects, and microscopic objects

Allow storage of data for later use

The brightness of the projector is measured in

Are built into the computer  or monitor, and others are external to the computer and must be plugged into ports at the back of the computer

This portable device that store an dplay audio such as music or podcasts and or audio and video

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Touch pads/ track balls

Optional character reognition

Head phones

Webcam

Tablet computer

Serve as the mouse on some laptop computers

It converts texts

Is used when individual students are using multimedia programs that include sounds

Tiny camera that is sits on/ is part of a computer

Complete computer syster in a slate format The user can make notes usig a stylus or digital pen o a touch screen

[image]Classroom response system or "clicker"

Pixel

Printers

Dots per inch(DPI)

Laser printers

Is a handled device that resembles a TV remote that allows students to respond to questions posted by the instructors

Single colored square on the screen

Outputs the data after in has been proceessed in what is called hard copy

The resolution is measured in this

This type of printer produce highest quality output

[image]Compact disc options

USB hub

Blu-ray disc

Application software

screen magnifier

Has variety of external hard disk drives

When have more than USB devices than USB ports, this can provides additional ports

Newest disc technologies, having the same appearance as the other discs

Allows the computer to carry out specific functions, such as word processing, creation of databases and speadsheets, and so on

Fits over the computer monitor and magnify the images that appear on the screen

[image]Alternative labels

Touch screens

Speech output software

System software

Instructional software

Are taped or glued to tops of frequently used keys in the standard keyboard

Is not only commonly used in grocery self-checkouts but are also available for computers in the form of a device that is either placed on the monitor or built into it

Audibly speaks screen content and commands

In order to function, a computer must have software that tells the computer what to do

This is a category of software whci presents content in tutorial, simulation, instructional game, problem solving, and drill and practie forms