Computer Architecture Notes

Input Devices

• Keyboard
• Mouse/Trackpad
• Screen
• Camera
• Microphone
• Graphics Tablets
• Barcode Reader
• Gamepad
• Joystick
• Keyboard (Piano)
• Scanner
• Webcam
• Touchpads
• Pen Input
• Electronics Whiteboard
• Magnetic Key Cards

Output Devices

• Screen Monitor
• Printers
• Plotters
• Projector
• LCD Projection Panels
• Computer Output Microfilm
• Speakers
• Radios

Both

• Moderns
• Network Cards
• Touch Screen
• Hedsets
• Speakers
• Audio Cards
• Sound Cards
• USB
• Fax Machine

RAM (random access memory) is a volatile memory, meaning it erases all the memory when the power is switched off. It stores the current programs and data. 

CPU (Central Processing Unit) is into Control Unit and ALU

ALU (arithmetic logic unit) performs arithmetic operations and evaluates logical statements true or false.

Control Unit oversees the execution of the program statement after statement.