LEARN TO COUNT IN BINARYCALLED “MACHINE LANGUAGE”THE LANGUAGE OF THE COMPUTER

…. Now you will become a real

“bit head” or “computer nerd”

0’s and 1’s

0 = OFF1 = ON

ELECTRICAL IMPULSES

EXAMPLE:

WHAT HAPPENS WHEN YOUR CELL PHONE DIES? NO ELECTRICITY!

Did you know? The human brain also runs off of electrical impulses called …..

BINARY DIGITS ARE 1’S OR 0’S

DIGIT = A SINGLE NUMBER

BINARY = A NUMBER SYSTEM BASED ON ZEROS OR ONES.

A bit is a 1 or a 0.

BINARY DIGIT = BIT

BINARY VOCABULARY Bit = 0 or 1 Byte = 8 bits 1 Byte = 1 character on the keyboard (, A,

©) Nibble = part of a byte (4 bits = ½ of a byte) Hex = 6 (six-sided) Hexadecimal = 16 digits 6 + 10 = hex

(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15) Used when creating and mixing colors It’s how we get 16 million different colors to use on our computer).

ASCII (American Standard Code for Information Interchange) ASCII is a standard that all computers can understand. It contain 128 characters but 33 of these are non-printing and mostly obsolete control character that affect how text is processed. All 95 other characters correspond to a number.

ASCII start as a standard in 1967 and was later updated in 1986. There is also extended tables but no one of these is a real standard. It depends on your computer.

UNICODE DEFINITION

Unicode is the international standard whose goal is to provide the means to encode the text of every document people want to store in computers. Including Mathematics and all Written Languages

Around the World

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THE BINARY NUMBER 1111 1111 = 255

1 1 1 1 1 1 1 1

128 64 32 16 8 4 2 1

WE NEED 8 VOLUNTEERS TO BE BINARY DIGITS (CLASS CHOOSE NUMBERS BETWEEN 0 AND 255)

1 1 1 1 1 1 1 1

8 4 2 1 8 4 2 1

COUNTING IN HEXIDECIMAL

REPEAT THE RIGHT 4 BITS TWICE

If the “nibble” adds up to 10 – 15, use A – F

1111 1111 F F

JUST FOR FUN

HOLD YOUR ALT KEY DOWN AND PRESS THE 4-DIGIT DECIMAL NUMBER OF THE NUMERIC KEYPAD AND SEE WHAT YOU GET????

Alt – 0169 is © the copyright symbol

The utility of ASCII is when you don't know where to find a character on your keyboard. You just have to press the ALT key, hold it down and type the decimal number on the numeric keypad.

http://www.ascii.cl/htmlcodes.htm

http://www.ascii.cl/htmlcodes.htm

WEB RESOURCE FOR FINDING CHARACTERS