What are we going to see?

hardwaresoftwaredifference between hardware and software;main components of a general-purpose computer:• central processing unit (CPU),• main/internal memory (including ROM and RAM),• input devices,• output devices,• secondary/backing storage.• operating systems, including:• graphic user interface (GUI),• command-line interface

types of computer including:• personal computer (PC) or desktop• mainframe• laptop• palmtop• personal digital assistant (PDA).

Is the physical parts of a computer system.The ones that you can feel and touch.

Hardware

A computer printer

SoftwareThe set of instructions that make the computer system do something.There are two types of software:The computer’s operating systemPrograms

Computer operating systems

Microprocesor

Hardware Software

You can touch it You can’t touch it

Solid objects Intructions for using solid objects

Differences

Computer system

HeadphonesCPU

Computer system

A computer is a device designed to do something such as process information or control a system.

Main components of a general-purpose

computer

The hardware can be divided into several types of devices:

Input devicesProcessorOutput devicesStorage devices

Input device

Processor (main

memory)

Output device

Storage device

Input devices

Is used to put data into the computer