Binary, HEX & ASCII Study Guide

Tera

Means 1 trillion

Giga

Means one billion

Word

This is a process that allows you to type and change these single characters into long papers or anything that can be typed.

Bytes per character

one byte for each one character

Mega

Means 1 million

Hexadecimal

Positional Numeric System using 16 or Base 16 for positional use.

Unicode

The coding used to show characters. There are 110,000 characters covering 100 scripts worldwide.

ASCII Chart

This is the chart used once we change Binary to Hex. We take the two Nibbles (High and Low) and find the coordinating character that corresponds with the number. such as 01010111 is changed into 5 and 7 which is the character W on the ASCII Chart.

Peta

This is the fifth power of 1000.

Binary

Numbers 0 and 1 used as symbols and when a row of eight is formed then you use an ASCII chart to find the represented symbol.

Bit

This is one digit out of an 8 digit byte.

Byte

This is the full 8 digits that make up one character such as a letter or number.

Base 10

This is the position numbers lay when in sequence. Such as the number 1,982. The 1 is in the thousand's spot. The 9 is in the hundreds spot. The 8 is in the tens spot. The 2 is in the ones spot.

HEX to ASCII

8421 I 8421 0101 I 0111 Just multiply the top number by the number under it and add all the numbers on each side. i.e. the formula equals 5 on the left and 7 on the right. Match this up and it gives you the character W on the ASCII chart

Binary to HEX

8421 I 8421 0101 I 0111 When we look at this table (8421 I 8421) you must fill the Binary number in under the table and use the ASCII chart to match up the variable and find the character that equates to that number. Just multiply the top by the number under it and add all the numbers on each side. i.e. the formula equals 5 on the left and 7 on the right. Match this up and it gives you the character W

ASCII

A character encoding scheme originally based on the English alphabet that encodes 128 specified character.

Prefixes

A terabyte is the largest prefix and a kilabyte is the smallest.

ASCII Codes

ASCII is a table used when changing HEX to characters. The codes are the symbols used on the table for each character.

Base 2

Binary Numeral System. Represents numeric values using the two symbols 0 and 1.

Base 16

Counting system based on 16 where the base ten numbers 10-14 are replaced with a-f. Called base 16 because there are sixteen digits. 0-9 which is ten and A-F which is 6.

Low Nibble

Nibble is half a byte. 0-15, or one hex digit. Low nibbles are bits 0-3

High Nibble

Nibble is half a byte. 0-15, or one hex digit. High nibbles are bits 4-7

Upper HEX Values

When changing Binary to Hexadecimal numbers 41 to 5A are Uppercase

Lower Hex Values

When changing Binary to Hexadecimal numbers 61 to 7A are lowercase

Kilo

means 1000