Computer Architecture Notes

Input Devices:

1. Graphics Tablets
2. Cameras
3. Video Capture Handware
4. Trackballs
5. Barcode reader
6. Digital camera
7. Gamepad
8. Joystick
9. Keyboard
10. Microphone
11. MIDI keyboard
12. Mouse (pointing device)
13. Scanner
14. Webcam
15. Touchpads
16. Electronic Whiteboard
17. Magnetic Key Cards

Output Devices:

1. Monitor
2. Printers (all types)
3. Plotters
4. Projector
5. LCD Projection Panels
6. Computer Output microfilm (COM)
7. Speaker(s)
8. Radio

Both Input-Output Devices:

1. Modems
2. Network cards
3. Touch Screen
4. Headsets
5. Facsimile (scanner)
6. Audio Cards/Sound Card
7. USB

Parts of Central Unit:

Program:

• Ask the user for scores, S1, S2, S3
• Save the scores
• Add Scores
• Save in sum
• Find average 
• Save average
• Print Scores, sum, average

Random Access Memory- volatile - this means that everything that is stored is erased when turned off. The data that is running and the data that is related to it is stored in RAM. 

Central Processing Unit has 2 units:

1. Control Unit (CU)
1. executes the program line by line and works as an interface between input/output devices, ALU, and RAM
2. Arithmetic Logic Unit (ALU) 
1. performs arithmetic operations and evaluates logical statements