iGCSE ICT - Theory

Input devices

Are MICRs input devices or output devices? (Magnetic ink character recognition)

Input devices

Are OCRs input devices or output devices? (Optical character recognition)

Input devices

Are OMRs input devices or output devices? (Optical mark recognition)

Input devices

Are PIN pads input devices or output devices?

Input devices

Are barcode readers input devices or output devices?

Input devices

Are chip readers input devices or output devices?

Input devices

Are digital cameras input devices or output devices?

Input devices

Are graphics tablets input devices or output devices?

Input devices

Are joysticks input devices or output devices?

Input devices

Are keyboards input devices or output devices?

Input devices

Are light pens input devices or output devices?

Input devices

Are magnetic stripe readers input devices or output devices?

Input devices

Are microphones input devices or output devices?

Output devices

Are monitors input devices or output devices?

Input devices

Are numeric keypads input devices or output devices?

Output devices

Are plotters input devices or output devices?

Input devices

Are pointing devices input devices or output devices?

Output devices

Are printers input devices or output devices?

Input devices

Are remote controls input devices or output devices?

Input devices

Are scanners input devices or output devices?

Input devices

Are sensors input devices or output devices?

Output devices

Are speakers input devices or output devices?

Input devices

Are touch screens input devices or output devices?

Input devices

Are video cameras input devices or output devices?

The physical parts of the computer that you can touch.

Definition of hardware.

A collection of instructions that tell the hardware what to do.

Definition of software.

CPU, ROM/RAM, secondary storage, Input devices, output devices

Five main components of a computer (In order of usefulness for the computer)

Software

Is a database manipulation program an example of hardware or software

Hardware

Is a keyboard a piece of hardware or software?

Hardware

Is a microphone an example of hardware or software?

Hardware

Is a mouse an example of hardware or software?

Software

Is a word-processing application an example of hardware or software.

Software

Is your web browser an example of hardware or software?

Personal computer (PC), mainframe, laptop, palmtop, personal digital assistant.

List the five different types of computers.

CLI - Command line interface GUI - Graphics user interface

List the types of operating systems.

Observation, interviews, questionnaires, collecting documents

State four ways a system analyst can collect information about the present system.

They have excellent colour accuracy They have excellent brightness They have a great viewing angle

Three advantages of CRT monitors.

They are light They take a small amount of desk space They produce less glare

Three advantages of LCDs and TFTs.

They have lower image quality They are expensive They need noisy fans to cool down

Three disadvantage of a multimedia projector.

They have poor colour accuracy They have poor blacks They are expensive

Three disadvantages of LCDs and TFTs.

They are heavy They consume a lot of energy They become very hot

Three disadvantages or CRT monitors.

They can be shown in a large viewing area They enhance the users experience

Two advantages of a multimedia projector.

Monitor, printer

Two examples of hardware

Windows Vista, Microsoft word

Two examples of software

Analogue to digital converter

What converts analogue data (such as temperature) to digital?

Cathode ray tube monitor

What does CRT monitor stand for?

Liquid crystal display

What does LCD stand for?

Thin film transistor

What does TFT stand for?

The people don't work the way they usually do because they're being watched.

What is a disadvantage of using the method observation for the system analyst?

The information is limited by the questions set

What is a disadvantage of using the method questionnaire for the system analyst?

A lot of detailed information can be gathered

What is an advantage of using the method interview for the system analyst?

The analyst can gather unbiased information with his/her eyes.

What is an advantage of using the method observation for the system analyst?

It is quick and simple

What is an advantage of using the method questionnaire for the system analyst?

Testing

What systems analysis and design stage does this define? Checking if the newly created system works as expected

Evaluation

What systems analysis and design stage does this define? Checking that the new system meets all expectations

Research

What systems analysis and design stage does this define? Collecting information about the present system works

Design

What systems analysis and design stage does this define? Coming up with a new system that will fix the present systems problems

Documentation

What systems analysis and design stage does this define? Creating documents that describe how to use the new systems, and how it works

Production

What systems analysis and design stage does this define? Creating the new system from the design.

Analysis

What systems analysis and design stage does this define? Examining out how the present system works and identifying problems with it

Implementation

What systems analysis and design stage does this define? Replacing the present system with the new system