What are Computers? G Use this tutorial alongside the numbers coded in your workbook and answer the related questions in each section. http://creativecommons.org/licenses/by-nc/4.0/ What are computers adapted from Nikki Maddams
(G) Computer Language Index 89. Objectives and Outcomes 90. Keywords 91. Binary piano 92. How do computers talk? 93a. Binary - computer language 94. How data is represented 95. Bits bytes and buzzwords 96. Binary 97. Decoding binary 98. ASCII bits as codes 99. Task 100. Question time 101. The binary game 102. What do you know? 103. Computer terms 104. Word tracker
Objectives and Outcomes Learning Objective: Understand how to decode binary numbers and convert them to letters using ASCII. Learning Outcomes: GOOD: Decode decimal numbers to and from binary and convert them to letters. BETTER: Use an ASCII table to decipher an encoded message written in binary. BEST: Play the binary game online to decode binary numbers.
binary --- denary --- machine code --- ASCII
Make your own Binary Piano Below are two images. They should be copied back-to-back as exactly as possible, so that the bold 0's on the back fall directly behind the powers of 2. (So, the second image should be upside down on the back of the first image.) Instructions for folding and cutting are in your workbook. Cut out as one piece and fold and paste in half. Then cut to end of solid lines by numbers 128-1 to make a Binary Piano. Now complete task 2.
Not bad Fred but my hard drive’s playing up a bit. How do Computers Talk? Is this right? Not bad Fred but my hard drive’s playing up a bit. Hello Frank how ya doin?
How do Computers Talk? NO!!! This is more like it: 10110011 01011010 10000101 10010100 10010100 11010111 10110101
Binary Computer Language Computers communicate and share data using 1’s and 0’s. This is called: Binary (also known as machine code) The computer’s memory is the part where data is stored. Just as information could be put into a book, using letters of the alphabet, the data in the computers memory is a series of data characters ‘0’ & ‘1’s.
How data is represented in the computer
Bits, Bytes, and Buzzwords Binary – A numbering system using only 1s and 0s Bit – A single unit, either a 1 or 0 Byte – A collection of 8 bits, e.g. 01001011 Kilobyte – 1024 bytes equals 1K of storage
Binary Binary is usually written as 8 bits: The people holding signs would be 1’s and those without would be 0’s. + + 8 = 11 2 1
Decoding Binary The 8 bits represent: 128, 64, 32, 16, 8, 4, 2, 1 So to convert 0 0 0 1 0 1 0 1 we can use the table below: 128 64 32 16 8 4 2 1 Adding these together gives 21
ASCII - Bits as Codes For example: 01000001 = 65 = A American Standard Code for Information Interchange In computers every letter, symbol or number you type is represented by an ASCII code number. When computers use binary, this can be converted back to letters and words by looking up the value in the ASCII table. For example: 01000001 = 65 = A
Task To decode the message: Convert the binary number to a decimal number Look up the decimal number in the ASCII table to find the equivalent letter. Use the help sheet called “Decoding Binary Messages” to decode the secret message you have been given in your workbook.
Question Time What is another name for binary? [94] How is data represented in the computer? [94] Explain what is a BIT and what is a BYTE and KILOBYTE? [95] Starting from the right-hand side what numbers are represented by the 8 bits in a binary number? [97] What does the acronym A S C I I stand for? [98] How does the computer represent ASCII codes? [98]
The Binary Game Split Class Blue Team VS. Red Team forums.cisco.com/CertCom/game/binary_game_page.htm .
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Word Starter- Brain Tracker Using the Brain Tracker grid, how many words can you find? Each word must contain the central G and no letter can be used twice. Can you find the nine letter word? E S D G I T How many words? 5 = average 9 = good 12 = excellent 13+ = WOW! V E I