Term
| when was the microprocessor revolution? what happened? |
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Definition
1970 to 1980 and on.
put computers in daily use, created a gui |
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Term
| why were operating systems developed?(4) |
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Definition
| managing various applications, files, communications, computer workings. |
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Term
| what was the break through in 1970? |
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Definition
| timesharing, multiprograming |
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Term
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Definition
| allow shared clock cycles of CPU. |
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Term
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Definition
| different programs occupy main memory simultaneously |
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Term
| what are three purposes of an operating system? |
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Definition
| convenient environment to run program, efficent use of system resources, and protection of hardware and give security to system |
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Term
| what is cross platform programming? and why did it happen |
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Definition
| programs could be run on different machines. it happened becaus there were no longer just main frames, and mini computers. |
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Term
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Definition
| worked towards visualization of information in the 1960's |
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Term
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Definition
| three institutions that formed a network to save information. more institutions joined and became the internet |
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Term
| what did the microrevolution begin with? |
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Definition
| commercial release of intel 4004 microchip in 1971 |
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Term
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Definition
MITS(microinstrumentation telemetry systems) 1974. built around 8 bit processor, no gui, instead flickered 8 switches on and off.
paul allen and bill gates wrote basic for this comp |
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Term
| which companies were in on this between 1975 and 1980? |
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Definition
| motorola, intel, TI. apple was most successful |
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Term
| what did steve jobs and steve wozniak do? |
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Definition
| wanted to create a user friendly, all purpose computer. created the apple 1 in 1976 |
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Term
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Definition
| before the altair in 1973. object language had mouse and monitor. connected to other computers through ethernet. first gui apps were on this comp. xerox didn't htink it would work, eventually it was too late and too expensive. |
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Term
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Definition
| IMB planned the pc. and thought they wouldnt do well, so they didn't want to manufacture and own the technology themselves(a first). so third party vendors did it for them. it sold really well in 1981. third party, took it on themselves and sold models cheaply. IBM crashes. |
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Term
| who brings GUI to mass market? |
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Definition
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Term
| client server architectures allowed processes to run on networked computer and serve information to clients. |
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Definition
| communication protocol and naming standards facilitated network apps. web browser is clien service computing. |
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Term
| what is the programing process?(7) |
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Definition
define problem-whats the problem?
develop algorithm-step by step solve
formalization-go through it
user interface-what's it going to look like
writing code-translate to comp language
interpreters and compilers-run code. test line by line.
testing and debugging-test out all possiblities. |
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Term
| three types of formilization? |
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Definition
flow charts
pseudocode
desk checking |
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Term
| difference between flow charts and pseudocode? |
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Definition
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Term
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Definition
| typed commands passed through command line interface, to command interpreter |
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Term
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Definition
| icons boxes, scroll menus |
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Term
| where do you write your code, and what does it come or not come wiht/ |
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Definition
| development environment. collection of tools, editors, refernce materials, libraries. this ide. may or may not be included |
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Term
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Definition
| crossing platforms with compiled language programs |
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Term
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Definition
| creates exe file, can leave development environment, compiles once. great for speed, bad for needing to change often. cross platform is also hard |
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Term
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Definition
| speed is bad if it is executed all the time, cross platform is easy, easy to change all the time. runs code line by line every time. |
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Term
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Definition
| accepts information, processes data, provides results |
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Term
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Definition
| a list of instructions written in computer language |
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Term
| what is inside a computer? |
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Definition
| cpu, ram, rom, mass storage, video processors, disk drive |
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Term
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Definition
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Term
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Definition
| error diring runtime(incorrect output) |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| every executable program starts with this |
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Term
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Definition
| define sections of code to do certain things |
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Term
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Definition
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Term
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Definition
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Term
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Definition
int
float
double
unsigned long
double long
char
long |
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Term
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Definition
| strings of letters used to identify variables |
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Term
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Definition
declaring identifier twice is illigal.
illegal names:int if while. .. lcout main and cin are legal but silly. |
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Term
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Definition
literal= assignation of something to variables. char lit('C') int lit(3) string lit("hi)
constants: named constants cant be changed inside program. all caps is used. no expressions as constants |
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Term
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Definition
assign them to values
use them in expressions
print them |
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Term
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Definition
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Term
| how many bits is type int? |
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Definition
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Term
| how many bits are characters |
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Definition
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Term
| floating points are how many digits and how many bits? |
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Definition
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Term
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Definition
| c++ is a strongly typed language. each variable is a certain type that can be converted. type cast in division |
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Term
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Definition
| assignment from literals, variables, functions, from expressions |
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Term
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Definition
| made of constants, operators, and variables |
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Term
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Definition
++ and --.
++X = increments before x is used in expression
X++ = increments x after entire expression was used. |
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Term
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Definition
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Term
| a blank is considered to be an invalid character |
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Definition
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Term
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Definition
| either true or false (1 or 0) |
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Term
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Definition
| c++ converts int to type bool. any non 0 result is true |
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Term
| what do boolean expressions do? what are they? |
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Definition
| compare values. int char and float. Equal, not, not equal, lesser/greater than/ or equal |
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Term
| what is the precedence of operators |
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Definition
| unary minus, !, *, /, %, -, +, <=, <, >=, >, ==, !=, &&, || |
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Term
| what do control structures do? |
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Definition
| allow programs to run non sequentially. they control the flow of program |
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Term
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Definition
based on logical expressions. may or may not be executed
provides one option |
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Term
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Definition
| provides option for true statemnt and false statement. two options |
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Term
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Definition
| provides as many as you want. just end with an else. |
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Term
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Definition
| if bound to an if. note: else statement binds with previous if statemnet. |
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Term
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Definition
Uses variable of int or char only. Labels are constnts same type as variable. There can be any number of statements after a variable or none at all.
Sometimes you don’t need a break statement. This is called fall through. If there are no breaks all the statements following the true case will be executed.
dont use floats. only char and int |
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