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3.  IN COMPUTING, MEMORY REFERS TO A DEVICE THAT IS
USED TO STORE INFORMATION FOR IMMEDIATE USE IN A
COMPUTER OR RELATED COMPUTER HARDWARE DEVICE.

4. A HARD DISK DRIVE (HDD) IS AN OLD SCHOOL STORAGE
DEVICE THAT USES MECHANICAL PLATTERS AND A
MOVING READ/WRITE HEAD TO ACCESS DATA. A SOLID
STATE DRIVE (SSD) IS A NEWER, FASTER TYPE OF DEVICE
THAT STORES DATA ON INSTANTLY-ACCESSIBLE MEMORY
CHIPS.

5. A MOTHERBOARD IS THE MAIN PRINTED CIRCUIT BOARD FOUND IN
GENERAL PURPOSE COMPUTERS AND OTHER EXPANDABLE SYSTEMS. IT
HOLDS AND ALLOWS COMMUNICATION BETWEEN MANY OF THE
CRUCIAL ELECTRONIC COMPONENTS OF A SYSTEM SUCH AS THE
CENTRAL PROCESSING UNIT AND MEMORY AND PROVIDES
CONNECTORS FOR OTHER PERIPHERALS.

6. ALTERNATIVELY KNOWN AS A DISPLAY ADAPTER,
GRAPHICS CARD, VIDEO ADAPTER, VIDEO BOARD OR
VIDEO CONTROLLER. A VIDEO CARD IS AN EXPANSION
CARD THAT CONNECTS TO A COMPUTER MOTHERBOARD.
IT IS USED TO CREATE PICTURE ON A DISPLAY WITHOUT A
VIDEO CARD YOU WOULD NOT BE ABLE TO SEE THIS PAGE

7. A CENTRAL PROCESSING UNIT (CPU), ALSO CALLED A
CENTRAL PROCESSOR OR MAIN PROCESSOR, IS THE
ELECTRONIC CIRCUITRY WITHIN A COMPUTER THAT
EXECUTES INSTRUCTIONS THAT MAKE UP A COMPUTER
PROGRAM.

8. A POWER SUPPLY UNIT CONVERTS MAINS AC TO LOW
VOLTAGE REGULATED DC POWER FOR THE INTERNAL
COMPONENTS OF A COMPUTER

9. A COMPUTER MONITOR IS AN OUTPUT DEVICE THAT
DISPLAYS INFORMATION IN PICTORIAL FORM. A MONITOR
USUALLY COMPRISES THE DISPLAY DEVICE, CIRCUITRY,
CASING AND POWER SUPPLY.

10. A MOUSE IS A SMALL HANDHELD INPUT DEVICE THAT CONTROLS A
COMPUTER SCREEN’S CURSOR OR POINTER IN CONJUNCTION WITH
THE WAY IT IS MOVE ON A FLAT SURFACE
THE KEYBOARD IS THE PIECE OF COMPUTER HARDWARE USED TO
INPUT TEXT, CHARACTERS AND OTHER COMMANDS INTO A
COMPUTER OR SIMILAR DEVICE.

11. DVD-RW ARE OPTICAL DRIVES.AN OPTICAL DRIVE IS ONE THAT
USES A LASER TO READ INFORMATION FROM OPTICAL DISCS SUCH
AS CD’S, DVD’S AND BLU-RAY DISCS.THE DISC ROTATES RAPIDLY
WHEN INSERTED INTO THE DRIVE AND A LASER BEAM READS THE
INFORMATION FROM THE DISC.

12. A SYSTEM FOR CONNECTING A NUMBER OF COMPUTER
SYSTEMS TO FORM A LOCAL AREA NETWORK WITH
PROTOCOLS TO CONTROL THE PASSING OF INFORMATION
AND TO AVOID SIMULTANEOUS TRANSMISSION BY TWO
OR MORE SYSTEMS.