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| Hyper Text Markup Language |
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1. Main heading
2. 2nd heading
3. 3rd heading
4. 4th heading |
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| http:// - a href = http://www.csus.edu |
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a simple name of file
a href = "resume.htm" |
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| a href = "mailto:john@csus.edu |
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File Transfer Protocol
-copies files over a network |
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Simple Mail Transfer Protocol
-Used to send email |
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Post Office Protocol
-Retrieves emails |
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Hyper Text Transfer Protocol
-Transfers webpages
-Each page item is requested separtely |
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^ Exponent
* Multiplication
/ Division
+ Addition
- Subtraction |
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= Equal to
Not equal to
> Greater than
>= Greater than or equal to
< less than
<= Less than or equal |
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AND – Logical And
OR – Logical Or
XOR – Logical Exclusive Or
NOT – Unary Logical Negation |
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Executes if statements are true
If CONDITION THEN
STATEMENTS
END IF |
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| Used if STATEMENT is false |
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| Consists of little dots called pixels, Pixels are arranged on a grid, The color of each grid is a binary number |
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| refers to total number of color in an image, more bits more colors |
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| Describes color depth usually a power of 2 (2,4,16,32) |
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If true loop continues (if statement that loops)
Do WHILE condition
Statement
Loop |
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| Audio program, Computer synthesizes sounds |
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| Digital representation of sound PCM data represents vibration we hear |
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| Loop statement with numbers, representation, numerical value, start with initial value, changes with each loop, stops once value is greater than end value. |
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| FOR LOOP is a form of while loop as a result: A WHILE LOOP can implement any FOR LOOP, FOR LOOP is used as a shortcut notation |
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World's first programmer
Created 1st computer program and designed several |
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| Developed Turing machines, 1937 proves prgram |
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1946-1958
programs written in machine language read w/ punch cards & stored on magnetic tape |
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1959-1964
used transistors,more reliable than vacuum tubes and requires less power, compilers and disk storage was developed. |
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1965-1970
Used integrated circuts, increased speed, smaller size, lower cost, less electricity, birth of mini-computer |
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1971-Present
Use microprocessor(computer on chip), Faster, Smaller, lower cost |
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Admiral US Navy
Discovered first bug |
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| Text files, test format consisted of commas and / or new lines |
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| open file, input (reads data from file) output (writes data to a file |
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| Closes file that was opened previously |
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Reads data from file
(opened as INPUT) Assigns to a variable and works like normal input statement |
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End of File
used to read a whole file, often used with a WHILE LOOP, returns true when END is reached or file doesn't open |
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| Writes data to a file, opened as OUTPUT, often used with INPUT #, Saves data in format that Input# can read, separated by commas |
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| Each array elemet has a location in memory, think of array as mailboxes each mailbox belongs to an array but each mailbox has its own identity (index) |
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| DIM Multiple element for an array, must be done before an array |
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Used to add comments/ REMarks to your program
makes program easier to read |
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i.Used to change the value of a variable.
ii.Commonly known as an “assignment” statement |
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:Clear Screen
ii.Any info on the output will disappear |
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:internet scam that comes as e-mail
1.Often will display: Link or Attachment |
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:a hidden part of some useful s/w
1.Pretends to be legitimate software
2.Performs secret actions and can carry other malicious codes
3.Dose not replicate itself |
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: it breaks into your computer
1.Transports itself over a network
2.Does not need a host doc.
3.Enters a computer w/o user interaction
4.Often delivers malware. |
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