Introduction to Computers: Understanding Hardware and Input Devices
Computers are electronic devices that process input to produce information. They consist of hardware components like CPUs, input/output units, and memory. Input devices such as keyboards, mice, and scanners help translate human-readable data for computer processing.
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Presentation Transcript
What are computers? Computers are electronic devices that can follow instructions to accept input, process the input and then produce information. 2
Computers are made of 1. HARDWARE 2. SOFTWARE 3
Hardware 4
Hardware 1. Central Processing Unit (CPU) 2. Input units 3. Output units 4. Memory (Main or Primary Memory & Secondary or Auxiliary Memory) 5
Components of a Computer System Central Processing Unit (CPU) Data control unit (CU) Memory output units Arithmetic logic Unit (ALU) RAM Input units ROM Auxiliary Memory Information /Knowledge 6
Input Devices Translate data from form that humans understand to one that the computer can work with Most common are keyboard and mouse Selector Buttons 7
Input Devices Keyboard(QWERTY keyboard, ATMs keyboard) ATM: automatic teller machine Mouse Scanner Pre-storage Devise (Disk, CD s, etc.) Optical mark recognition (Light Pin , Bar code scanners) Microphone Joystick 8
Input Devices Point and Draw devices Trackball Touchpad Touch screen Magnetic stripes and smart cars. Digital Cameras 9
