unit 0 introduction to computer

What is a computer?

A device that accepts information and manipulates it for some result.

HARWARE FIRMWARE SOFTWARE

CPUMAIN

MEMORYPERIPHERAL

DEVICESSYSTEM APPLICATION

COMPUTER

HARDWARE(PHYSICAL PARTS)

CPU MAIN MEMORY PERIPHERALS

ALU CU RAM ROM INPUT OUTPUT

CPU

• MICROPROCESSOR• MOTHER BOARD• CASE• OTHER

COMPONENTS• BUSES

MONITOR

• The computer monitor is the physical display for your computer.

• The terms monitor and display are often used interchangeably

KEYBOARD

• looks like a standard typewriter keyboard. • Cursor Keys; Function Keys, F1 through

F12; Numerical Keypad …

MOUSE

• input device like the keyboard, but more dynamic.

• has a roller ball that is attached to several internal sensors ; 2 or 3 buttons

• you can click, highlight, or drag and drop the item.

DRIVES

• FLOPPY

• FLOPPY DRIVE

CD-ROM DRIVE

PRINTER• A printer transfers graphics

and text from your computer to paper.

• has lights and displays that tell you when it is out of paper or toner or ink, or when it has paper jammed inside it.

• Printers can differ in the resolution per inch, color capability and speed

SOFTWAREPROVIDES INSTRUCTIONS AND DATA

SYSTEM SOFTWARE

OPERATING SYSTEM & OTHER PROGRAMS

THAT ALLOW COMPUTER TO

FUNCTION

APPLICATION SOFTWARE

USED BY OPERATOR

FOR SPECIFIC TASKS

THE DESKTOPOnce Windows has been loaded, the desktop will be

visible on the screen

WINDOW

• Title Bar: Located at the top of the window, tells you what program you are using.

• Tool Bars: Located below the title bar, are specific to each program.

• Task Bar: Located at the bottom of the window, tells you what programs are open.

• Scroll Bars: Located on the side and on the bottom, enables you to scroll up/down or right/left.