The Computer and Its Parts

Technology Applications

(Keyboarding)

Keyboarding Terminology

Ergonomics - The scientific study of equipment design, as in office furniture or transportation seating, for the purpose of improving efficiency, comfort, or safety.

Qwerty Keyboard –named after the five letter keys located at the top left side of the keyboard;

home row – a s d f j k l ; - where finger positions start from.

ESCAPE KEY - a key that lets the user cancel the last operation and go back to the previous screen

What is a Computer?Ergonomics - Computer – Electronic device that

processes info. quickly and accurately. THE BOX.

CPU – (Central Processing Unit) - The brains of the computer.

Parts of the Computer Peripheral – hardware connected to

computer that makes it easier to use. Monitor - used to display info. Keyboard - An arrangement of keys

either attached to or apart from the computer.

Printer – inkjet, laser, color laser.

Computer Parts continued Types of Saving Devices

– Hard drive – inside your computer (C)

– Floppy disk drive – 3 ½ inch (A)

• No longer useful technology

• New computers do not have the floppy disk drive

– Flash drive – USB storage device

• Faster, more durable, and holds more data than the floppy disk

– CD-ROM drive – (D)

– DVD-ROM drive (D)

– Network – server located in the library.

Computer Parts continued

NetworkDefinition: Computers

connected together.Blue cablesRouterServer located in library

Four Functions of a Computer

1. Input - Entering data in the computer Mouse, keyboard, scanner, disk drive, etc.

2. Processing – Task is carried through CPU Binary Code

3. Output – Processed information put out by computer

Monitor, printer, speakers, disk drive, etc.

4. Storage – Where information is saved RAM – temporary memory, “working memory” ROM – Permanent storage for instructions to the computer

Input/Output

Input – Information entered into the computer.– Input Devices: Keyboard, mouse, microphone,

scanner, webcam, remote control, DVD drive

Output – Processed information put out by the computer.– Output Devices: Monitor, printer, speakers,

copy machine, DVD burner