CP102 Lecture Notes - Web 2.0, Inkjet Printing, Cloud Computing
Document Summary
Each letter, number or character is a unique combination of 8 bits of 0 and 1. Hardware: any part of a computer you can physically touch. Operating system: gives ability to connect to hardware. Application software (like operating system) and system software. Stationary: desktop computers (separate case and peripheral devices), all in one computers. Supercomputer: performs complex calculations very rapidly (physics etc) Embedded: self-contained computer devices performing dedicated functions, in car. Input devices: used to enter data and instructions into computer: keyboards, mouse, stylus, microphone, camera, scanner. Optical mouse: internal sensor or laser detects movement. Pixel: grid point on monitor, made of red green or blue. Response time: how often computer refreshes image, computers flicker very quickly. Touch screen: pressing on screen completes circuit by pressing together parts in the computer. Printers: inkjet spray tiny drops of ink, laser printers use laser beams and static to put toner on page, non impact.
