COIS 1010H Lecture Notes - Lecture 1: Performance Today, Sequential Access, Onedrive

• School: Trent University
• Department: Computing & Information Systems
• Course: COIS 1010H
• Professor: Jordan Hurley

Document Summary

Processing speed: cpu clock speed: one measurement of processing speed. Measured in megahertz (mhz) or gigahertz (ghz) Higher cpu clock speed = more instructions processed per second: alternate measure of processing speed is the number of instructions a cpu can process per second. Other factors also affect the overall processing speed of a computer: Cpu architecture, memory, bus speed, amount of ram, etc. Word size and cache memory: word size: the amount of data that a cpu can manipulate at one time. Typically 32 or 64 bits: cache memory: special group of very fast memory chips located on or close to the. Level 1 is fastest, then level 2, then level 3. More cache memory typically means faster processing. Usually internal cache (built into the cpu) The amount of data that can be transferred by the bus in a given time period. Memory refers to chip based storage: ram (random access memory): computer"s main memory.