(Notes) Heavily Compressed Textbook

Notes that Excel A very compressed computing textbook. Content follows the syllabus (7155) document. Made by Elvberth Yobel Rondonuwu Module 1: Computing Fundamentals 1.1 Computer Architecture [ Computer ] - Device that receives and processes data according to a set of instructions and produces the processed data [ Computer architecture ] - Description of how a computer is designed and built to function, including how its various parts are designed, organised and connected [ Data (singular: datum)] - Information used in a computer program 1.1.1 Perform calculations using bits, bytes, kilobytes, kibibytes, megabytes, mebibytes, gigabytes, gibibytes, terabytes, tebibytes, petabytes and pebibytes. [ Bit ] - Binary digit, value of either 0 or 1 [ Byte ] - Binary number made of 8 bits ‘Bi’s - powers of 1024 Normal units - powers of 1000 >> Power of 1 starts from ‘ki’ Bits → Bytes → Kilo → Mega → Giga → Tera → Peta (just rmb your own data storages) Bits → Bytes → Kibi → Mebi → Gibi → Tebi → Pebi 1.1.2 Describe the function of key components of a computer system [ Processor ] - Processes data and follows instructions >> [ Execute ] - To follow or perform an instruction >> [ Software ] - A set of instructions to perform specific tasks on a computer [ Main Memory ] - Stores data and instructions temporarily for immediate use by the processor >> [ Address ] - Number used to locate a byte in memory >> [ Volatile ] - Data is lost when power supply is interrupted [ Secondary Storage ] - Stores large amounts of data that will not be lost when the power supply is interrupted >> [ Hard disk/drive ] - Secondary storage where data is stored on rigid rotating disks coated with magnetic material

1.1.3 Describe the function of data and address buses in reading and writing to memory [ Data Bus ] - Transports data between memory and processor; bi-directional >> [ Bi-directional ] - Able to work in two directions, to and fro [ Address Bus ]- Transports required memory location from processor to memory; uni-directional >> [ Uni-directional ] - Able to work in one direction only > When writing data, data + address bus used to send data and specify location from processor. > When reading data, address bus specifies location from processor, then data sent back through data bus to processor. 1.1.4 Describe different input/output interfaces in terms of typical applications, connectors and speed [ Input ] - Data or instructions that the computer receives for processing [ Output ] - Intermediate or final results produced by