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COMPUTERS ARCHITECTURE
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Processor (CPU)
Memory
RAM memory
ROM memory
peripheral
input peripheral
Output peripheral
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CPUTHE CENTRAL PROCESSING UNIT
(CPU) OR PROCESSOR IS THE PORTION OF A COMPUTER SYSTEM THAT CARRIES
OUT THE INSTRUCTIONS OF A COMPUTER PROGRAM, AND IS THE PRIMARY ELEMENT CARRYING OUT THE
COMPUTER'S FUNCTIONS.
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MEMORY COMPUTER DATA STORAGE, OFTEN
CALLED STORAGE OR MEMORY, REFERS TO COMPUTER COMPONENTS, DEVICES, AND RECORDING MEDIA THAT RETAIN
DIGITAL DATA USED FOR COMPUTING FOR SOME INTERVAL OF TIME.
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COMPUTER DATA STORAGE PROVIDES ONE OF THE CORE FUNCTIONS OF THE MODERN COMPUTER. IT IS ONE OF THE FUNDAMENTAL COMPONENTS OF ALL MODERN COMPUTERS, AND COUPLED WITH A CENTRAL PROCESSING UNIT (CPU, A PROCESSOR), IMPLEMENTS THE BASIC COMPUTER MODEL USED SINCE THE 1940S.
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RAM RANDOM-ACCESS MEMORY (USUALLY
KNOWN BY ITS ACRONYM, RAM) IS A FORM OF COMPUTER DATA STORAGE.
TODAY, IT TAKES THE FORM OF INTEGRATED CIRCUITS THAT ALLOW
STORED DATA TO BE ACCESSED IN ANY ORDER (I.E., AT RANDOM).
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THE WORD RAM IS OFTEN ASSOCIATED WITH VOLATILE TYPES OF MEMORY (SUCH AS DRAM MEMORY MODULES), WHERE THE INFORMATION IS LOST AFTER THE POWER IS SWITCHED OFF.
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EXERCISE: GIVE THE CARACTERESTICS OF RAM STORAGE DEVICE
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CORRECTION:SAVE DATA PROVIDED BY USER.THE INFORMATION IS LOST AFTER THE POWER IS SWITCHED OFF.
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ROM READ-ONLY MEMORY (USUALLY
KNOWN BY ITS ACRONYM, ROM) IS A CLASS OF STORAGE MEDIA USED IN
COMPUTERS AND OTHER ELECTRONIC DEVICES.
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EXERCISE: GIVE THE CARACTERESTICS OF ROM STORAGE DEVICE.
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CORRECTION:IT CONTAINS BIOS(1) AND BOOT STROP(2)
1.THE VERIFICATION OF MATERIAL.2.CHARGED IN DEMARRAGE OF COMPUTERS.THE DATA SAVED ARE PERMENANT.
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PERIPHERAL (DEVICE) A PERIPHERAL IS A DEVICE ATTACHED TO A HOST COMPUTER BUT NOT PART OF
IT WHOSE PRIMARY FUNCTIONALITY.
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EXAMPLES ARE PRINTERS, SCANNERS, MICROPHONES, WEBCAMS, CAMERAS ,TV CARD ,JOYPAD ,JOYSTICK , USB DEVICE, READER ZIP, …
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INPUT PERIPHERAL AN INPUT DEVICE IS ANY PERIPHERAL
(PIECE OF COMPUTER HARDWARE EQUIPMENT) USED TO PROVIDE DATA
AND CONTROL SIGNALS TO AN INFORMATION PROCESSING SYSTEM
(SUCH AS A COMPUTER).
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KEYBOARD A 'KEYBOARD' IS A HUMAN INTERFACE DEVICE WHICH IS REPRESENTED AS A
LAYOUT OF BUTTONS. EACH BUTTON, OR KEY, CAN BE USED TO EITHER INPUT A
LINGUISTIC CHARACTER TO A COMPUTER.
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POINTING A POINTING DEVICE IS ANY HUMAN
INTERFACE DEVICE THAT ALLOWS A USER TO INPUT SPATIAL DATA TO A COMPUTER.
IN THE CASE OF MICE AND TOUCH SCREENS, THIS IS USUALLY ACHIEVED BY
DETECTING MOVEMENT ACROSS A PHYSICAL SURFACE.
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SCANNER IN COMPUTING, A SCANNER IS A DEVICE THAT OPTICALLY SCANS IMAGES, PRINTED TEXT, HANDWRITING, OR AN OBJECT, AND CONVERTS IT TO A DIGITAL IMAGE.1-SCANNER 3 DIMENSIONS2-SCANNER 2 DIMENSIONSGIVE THE DIFFERENCE BETWEEN 1 AND 2
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3D SCANNER
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IMAGE SCANNER, WHICH DIGITIZES A TWO-DIMENSIONAL IMAGE. 3D SCANNER, WHICH DIGITIZES THE THREE-DIMENSIONAL SHAPE OF A REAL OBJECT .
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OUTPUT DEVICES AN OUTPUT DEVICE IS ANY PIECE OF COMPUTER HARDWARE EQUIPMENT USED TO COMMUNICATE THE RESULTS OF DATA PROCESSING CARRIED OUT BY AN INFORMATION PROCESSING SYSTEM (SUCH AS A COMPUTER) TO THE OUTSIDE WORLD.