COMPUTER BASIC OPERATIONS

Hotimah, SPd.SiSeptember, 2012/2013

CONCEPT MAP

Computer Basic Operations

Basic OperationsGetting to Known Computer

Components of computer Dangerous parts of

computer Negative effects of

computer for health Arrangement of computer

set

Turning on computer Turning off computer

Introduction• Definition of computer:• A set of electronic devices that work together. (Supriyanto &

Fauziah, 2010: 79)

• Computer characteristics:1. Having a quick and precise accessing ability.2. Producing information from the previous data.3. Having the ability to process a large data into information.4. Having the ability to store a mass of data (up to giga byte).5. Having the ability to import and export data that is

specially design.

QUESTIONS

Why is computer categorized as an electronic

device?

Find out the disadvantages of a computer?

Components of computerHardwareSoftwareBrainware (user, operator, administrator)

Hardware• Hardware is the

machinery and electronic parts of a computer system.

• Hardware consist of: Input device: keyboard

and mouse Processing device: CPU

(Central Processing Unit) and storage media

Output device: monitor and printer

Software

• Software is a program containing instructions written in computer language comprehended by computer hardware.

• Kinds of software:• 1. Operating system software• Used as:

a. Interpreter b. Hardware configurationc. File management

Software

2. Application software• Used to process electronic data.

Based on the function, application software can divide intoa. Software for word processingb. Software for spreadsheet processingc. Software for statistic data processingd. Software for database processinge. Software for cad (computer-aided design)f. Software for image processingg. Programming language software to make personal

application

BRAINWARE

• Brainware is a term used to refer to the people who work in computer fields.• Its consist of:

1. User / Operator a person who operates a computer

2. Administrator a person who organizes/design the work system, work sequence, data processing, and output

DANGEROUS PARTS OF COMPUTER

1. Monitor Produce a highly

intense light. A screen filter has to

be placed to avoid damage on our eyes due to the light radiation

DANGEROUS PARTS OF COMPUTER

2. CPU (Central Processing Unit)• do not touch directly

with wet hands because we can be electrified by electric current in it.

DANGEROUS PARTS OF COMPUTER

3. Computer’s cables• Must placed far from

water because it can cause short-circuit. The short-circuit. Can cause fire.

4. Keyboard Avoid water spill because it can

cause keyboard to hang/malfunction

Keyboard with spilled water or wet material can cause short circuit or electricity us when used.

NEGATIVE EFFECTS OF COMPUTER FOR HEALTH

1. Disturbance on eyes and head (computer vision syndrome). Such as: pain or headache, dry eyes and irritation, tired eyes, a weak ability of eyes focus, blurry vision (astigmatism, myopia, presbyopia), double vision, color disorientation.

2. Disturbance on arms and hands. Such as: ache on the wrist resulted from tendon disturbance, elbow pain, Carpal Tunnel Syndrome.

3. Disturbance on neck, shoulder, back, and waist.

ARRANGEMENT OF COMPUTER SET AND THE CORRECT BODY POSITION• The right and correct arrangement is the best way in avoiding

discomfort and health disturbances.1. Work place

Arrange the most comfortable position of computer and other device.

Arrange desk with consideration of how the device would be used.

Arrange the lighting of your work place optimally. Put book, report, or other printed material used while

working near the monitor. You can put under or next to it.2. Chair and body position

Choose a comfortable, adjustable, and back-supported chair.

Could you explain the right and correct arrangement of mouse and

keyboard?