1. What are we going to see? hardware software
difference 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).

2. Hardware
Is the physical parts of a computer system. The ones that you can feel and touch.
A computer printer
Software
The set of instructions that make the computer system do something.
There are two types of software:
The computer’s operating system
Programs
Microprocesor
Computer operating systems

3. Differences Hardware Software You can touch it You can’t touch it
Solid objects
Intructions for using solid objects
Computer system
Headphones
Computer system
CPU

4. Main components of a general-purpose computer
A computer is a device designed to do something such as process information or control a system.
The hardware can be divided into several types of devices:
Input devices
Processor
Output devices
Storage devices
Processor (main memory)
Input device
Output device
Storage device

5. Input devices
Is used to put data into the computer