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a computer does what it is programmed to do
program- a set of intrsutions the computers follows to perform tasks aka softeware
programmer- a person that creates, design, and tests computer programs
software deve,per
hardware is the physical edvices that make up a computer
a computer is a system of devices that work all together
there are typical components
- cpu
-output device
secondary storage device
main memory
- input device
cpu
a
central processing un
main memory- is the computer's work area. this is where the computer stores a program (temporarily) while the program is running, as well as the data the program is using
it can also be called the ram
random access memory
this is a volitale memory meaning that once the computer is off the data is eraced the cpu can quickly access the ram
secndary stprage- can hold data for a long period of time, even when the computer is off
- flash
- optical device- data encode optically (cd, DVD)
-
input- datat the computer collects from the people and other devices
input device- device that collects the data
KEYBOARD, MOUUSE, TOUCHSCREEN
OUTPUT- TDTATA THE COMPUTER COLLECTS FOR THE PEOPLE AND OTHER DEVICES
- OUPTUPT DEVICE- DEVICE THAT
SPEAKER, PROJECTOR, MONITOR
SOFTWARE
EVERYTHING THE COMPUTER DOE SIS CONTROLLED BY SOFTWARE
APPLICATION SOFTWARE- PROGRAMS THAT MAKE COMPUTER USEFUL FOR EVERYDAY TAKS
EMAIL. WORD PROCESSORS
SYSTEM SOFTWARE- PROGRAMS THAT MANAGE THE BASIC OPERATIONS OF A COMPUTER
OPERATING SYSTEM- CONTROLS THE OPERATIONS OF HARDWARE COMPONENTS
CONTROLS THE OPERATIONS OF HARDWARE COMPONENT
CONTROLS THE OPERATIONS OF HARDWARE COMPONENTS
UTILITY PROGRAM- SPECIAL TAKS TO ENHANCE COMPUTER OPERATION SUCH VIRUS SCANNER
keywords- predefined words that are used when writing a program in a high-level language
syntax- a set of rules to be followed when writing a program
statement- individual instructions in a high-level language
operators- perform operations on data
compilier- translates highlevel language into a spereate mahine languaguag
interpereter- translates and executes instruction for high leevel language programs
- no need for a seperate maxhine
source code- thw stateatments a programmer writes in a high level language
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