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## CS 105: Week 2 Lecture 1

1 review
by: Malik Moulton

220

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1

# CS 105: Week 2 Lecture 1 CS 105

Malik Moulton
UIUC

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These notes cover the basics of some computer science information such as the smallest unit a computer deals in, typical storage, and converting numbers into binary.
COURSE
Intro Computing: Non-Tech
PROF.
Martin Hellwig
TYPE
Class Notes
PAGES
1
WORDS
CONCEPTS
Computer Science
KARMA
25 ?

## 2

1 review
"Please tell me you're going to be posting these awesome notes every week.."
Camille Stehr

## Popular in ComputerScienence

This 1 page Class Notes was uploaded by Malik Moulton on Thursday January 28, 2016. The Class Notes belongs to CS 105 at University of Illinois at Urbana-Champaign taught by Martin Hellwig in Spring 2016. Since its upload, it has received 220 views. For similar materials see Intro Computing: Non-Tech in ComputerScienence at University of Illinois at Urbana-Champaign.

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## Reviews for CS 105: Week 2 Lecture 1

Please tell me you're going to be posting these awesome notes every week..

-Camille Stehr

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Date Created: 01/28/16
What is Data?  Data=plural  Datum=singular  Little piece of “stuff”/ information  Many forms o Images o Sound files o Videos How is Data Stored?  In the 60s data was stored in punch cards o Capacity= 80 bytes  A typical DVD o Capacity= 4.7 Gigabytes  1 byte = 8 bits o a byte is the smallest unite in a computer  Computers only know 0 and 1 o These two numbers are used to represent all other numbers o Plus, everything else on a computer  Binary Numbers o Every decimal number can be converted into a binary and vice versa o each digit can assume two different states ( 0 and 1) o each digit is worth twice as much as its right neighbor o Binary 101011  = (1*1) +(1*2) +(0*4) +(1*8) +(0*16) +(1*32)  = 43

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