01:198:110 Lecture Notes - Lecture 2: Computer Speaker, Backup Software, Virtual Memory

• School: Rutgers University
• Department: Computer Science
• Course: 01:198:110
• Professor: A Belowich

Document Summary

Week 2: computer hardware, memory, storage, performance, systems software. Abstract a vague concept or idea that cannot be physically seen nor touched. Input devices sends information to the computer to get processed: keyboards, mouse, digital cameras, microphones, output devices displays the result of that processing, monitor, printer, computer speakers, headphones, disk drives are both input and output. Modern-day digital computers: envisioned by charles babbage, a computer scientist in the 1800s, to perform 4 tasks (ipso), access input (data) through the input devices such as the keyboard, mouse, etc, process data, store information, provide output (information) Data vs. information: data is the raw, unorganized, useless facts that need to be input and processed. Information is when the data is processed and organized and becomes a user -friendly output. Trends about computers over time: faster speed, cheaper price, more accessible, portability / smaller, nanotechnology, more powerful, can be used for big mathematical calculations.