1. Computer Electronic device Accepts data - input
Processes it according to a given set of instructions
Produces results - output
input
output

2. The set of instructions that the computer follows
Computer Program
The set of instructions that the computer follows

3. Computer System
Hardware - the physical equipment used to process a data
Software - computer programs

4. Hardware
Input/Output Devices
Main Memory/Secondary Storage
CPU

5. Input/Output Devices Input devices - keyboard, mouse.
Enter data and programs into the computer
Output devices - printer, monitor. Display the results processed by the computer

6. Memory Main Memory – RAM Secondary Storage – 3 ½ floppy disk,
CD-ROM, hard disk.