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Computer Studies Test #1
Study for upcoming test on Next Monday
30
Computer Science
10th Grade
02/14/2012

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Cards

Term
Order the information processing cycle
Definition
1) Acquisition
2)Input
3)Validation
4) Manipulation
5) Storage
6) Retrieval
7) Output
8) Communication
9) Disposal
Term
Acquisition
Definition
Acquisition is the collection of raw data to be processed.
Term
Input
Definition
The collected data is input into the computer so it can be processed.
Term
Validation
Definition
This step ensures accurate input of data.
Term
Manipulation
Definition
Data is processed to produce information during this step using software such as Microsoft Word or a graphics program.
Term
Storage
Definition
Once processed or while waiting to be processed, the data and information can be stored in a secondary storage medium such as a flash drive, hard drive or CD.
Term
Retrieval
Definition
This step involves retrieving the data or information currently in storage so it can be further processed or output.
Term
Output
Definition
This step involves displaying, printing or broadcasting the processed information using various output devices.
Term
Communication
Definition
This step ensures that the output reaches the appropriate user.
Term
Disposal
Definition
This step removes data no longer required now or in the future.
Term
Program Errors
Definition
Result in incorrect results that may or may be noticeable. From a computer device.
Term
Data input errors
Definition
Result of the data entry operator entering the data incorrectly.
Term
Primary Memory
Definition
Term given to internal memory, which will temporarily store data while they are in use.
Term
ROM
Definition
Read-only memory and mean other info cannot be stored there.
Term
RAM
Definition
Random Access memory is used whilst processing is in progress.
Term
Secondary storage
Definition
Permanent storage of data or info, doesn't need a power supply and uses magnetic and optical systems to store data. Portable is some cases.
Term
Sequential Access
Definition
When data is retrieved one by one at a time, like a cassette tape.
Term
Random access
Definition
Can skip to a specific area of data. Opposite of sequential
Term
Thin Client Network
Definition
An actual computer relies on another computer to do most of the work.
Term
Client Server Network
Definition
One main powerful computer is the hub to less powerful computers. It is the server and the other computers are the clients.
Term
Bus network
Definition
One cable that branches of to peripheral devices or computers. Also known as LAN.
Term
LAN
Definition
Also a bus network. Known as Local Area Network.
Term
Star Network
Definition
Peripheral devices and computers are connected directly to a server / hub.
Term
Computerised information system
Definition
Consists of
- Computer hardware
- Computer Software
- People
- Procedures
- Data
Term
Input Technology
Definition
Technology that is inputted into a computer like a mouse, keyboard, barcode reader etc.
Term
Sizes of memory
Definition
1 kilobyte is about 1000 bytes
1 megabyte is about 1000 kilobytes
1 gigabyte is about 1000 megabytes
1 terabyte is about 1000 gigabytes
Term
Central Processing Device / Unit
Definition
CPU is the central to the workings of a computer and controls the movement of data between devices. Consists or the arithmetic/logic unit and the control unit.
Term
Arithmetic/ Logic unit
Definition
Manipulates data.
Term
Control unit
Definition
Directs the overall operation of a computer.
Term
Output technology
Definition
Where information can be output like using a printer to make a hard-copy.
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