CGS 2100C Lecture Notes - Lecture 4: Software, Midi, Instruction Set

• School: UCF
• Department: Computer General
• Course: CGS 2100C
• Professor: Nazih Abdallah

Document Summary

Computer: 1943: eniac (electronic numerical integrator and computer (used. Data origin and computer components: data origin: the following generate data. Global variables: computer environment can be classified under three categories: Computer hardware (computer components chart on chp. Ram: main memory of computer; can communicate with other computers. Processor- cpu has 2 parts: alu, cu- control unit; prepares the computer. Input from devices (mouse, keyboard) goes to ram. Cache: very fast memory designed to speed up the processor; stores most recently/frequently instructions. Qwerty: six letters of the first row. Azerty: six letters of the last row. Coleman: most frequently used characters correspond to strongest fingers and fewer hand jumps. Chorded keyboard: has fewer keys work like piano or organ (press more than one key for each character) Optical keyboard: uses light board and sensors. Pressed key blocks light and activates character code. Touch detection: uses layers of electrodes to detect finger contact and click.