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56 Cards in this Set
- Front
- Back
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an output device, which is used to PRINT INFORMATION ON PAPER. |
PRINTER |
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TWO TYPES OF PRINTERS: |
1.Impact Printers 2.Non- Impact Printers |
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prints the characters by striking them on the ribbon, which is the PRESSED ON THE PAPER. |
IMPACT PRINTERS |
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TWO TYPES OF IMPACT PRINTER: |
1.Character Printers 2.Line Printers |
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the printers which PRINT ONE CHARACTER AT A TIME. |
CHARACTER PRINTERS |
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TWO TYPES OF CHARACTER PRINTER: |
1. Dot Matrix Printer (DMP)2. Daisy Wheel |
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- one of THE MOST POPLAR PRINTERS. - these printers are popular because of their CAUSE OF PRINTING and ECONOMICAL PRICE. |
DOT MATRIX PRINTER |
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generally used for WORD-PROCESSING in offices that require a few letters to be sent here and there with nice quality. |
DAISY WHEEL |
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the printers which print ONE LINE AT A TIME. |
LINE PRINTERS |
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TWO TYPES OF LINE PRINTERS: |
1.Drum Printer 2.Chain Printer |
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this printer is like a DRUM IN SHAPE. |
DRUM PRINTER |
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a chain character sets is used. |
CHAIN PRINTER |
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-Print the characters WITHOUT USING THE RIBBON. - Print a COMPLETE PAGE A TIME. |
NON -IMPACT PRINTER |
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TWO TYPES OF NON-IMPACT PRINTER: |
1.Laser Printers 2.Inkjet Printers |
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They use LASER LIGHTS to produce the DOTS NEEDED TO FORM THE CHARACTERS to be printed on a page. |
Laser Printers |
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- Are non-impact character printers based on a RELATIVELY NEW TECHNOLOGY. - They print characters by SPRAYING SMALL DROPS OF INK ONTO PAPER. |
INKJET PRINTER |
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- Just like a HUMAN BRAIN. - It is used to STORE DATA and INSTRUCTION. |
MEMORY |
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THREE TYPES OF MEMORY |
1.Cache Memory 2.Primary Memory/Main Memory 3.Secondary Memory |
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A very highspeed SEMICONDUCTOR MEMORY which CAN SPEED UP THE CPU.
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Cache Memory |
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- It is SLOWER than the main memory. - These are used for STORING DATA / INFORMATION PERMANENTLY. |
Second Memory |
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HOLDS ONLY THOSE DATA and INSTRUCTIONS on which the computers is currently working. |
Primary Memory |
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The INTERNAL MEMORY of the CPU for STORING DATA, PROGRAM, and PROGRAM RESULT. |
Random Access Memory (RAM) |
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TWO TYPES OF RAM: |
1.Static RAM (SRAM) 2.Dynamic RAM (DRAM)
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Indicates that the MEMORY RETAINS ITS CONTENTS as long as POWER IS BEING SUPPLIED. |
Static RAM (SRAM) |
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- Must be CONTINUALLY REFRESHED in order to maintain the data.- Composed of ONE CAPACITOR and ONE TRANSISTOR. |
Dynamic RAM (DRAM) |
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The memory from which we can ONLY READ BUT CANNOT WRITE ON IT. |
Read Only Memory (ROM) |
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- A ROM STORES SUCH INSTRUCTIONS that are required to start a computer. - ASSEMBLE EVERYTHING IN ONE. |
Bootstrap |
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The VERY FIRST ROMS were hard-wired devices that contained a PRE-PROGRAMMED SET of data or instructions. |
MROM (MASKED ROM) |
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Read only memory that can be MODIFIED ONLY ONCE BY A USER. |
PROM (PROGRAMMABLE READ ONLY MEMORY) |
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Can be ERASED by exposing it to ULTRA – VIOLET LIGHT for duration of up to 40 minutes. |
EPROM (ERASABLE and PROGRAMMABLE READ ONLY MEMORY) |
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PROGRAMMED and ERASED ELECTRICALLY. It can be erased and reprogrammed about TEN THOUSAND TIMES. |
EEPROM (ELECTRICALLY ERASABLE and PROGRAMMABLE READ ONLY MEMORY) |
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A SINGLE PLATFORM to connect all of the parts of a COMPUTER TOGETHER. |
Motherboard |
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Is the AMOUNT OF DATA can be stored in the STORAGE UNIT. |
Memory Units |
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Is LOGICAL O AND I representing a PASSIVE or an ACTIVE STATE of a component in an ELECTRIC CIRCUIT. |
Bit (Binary Digit) |
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A group of 4 bits. |
Nibble |
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- A group of 8 bits. - A byte is the SMALLEST UNIT, which can represent a DATA ITEM or a CHARACTER. |
Byte |
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Like a byte, is a GROUP OF FIXED NUMBER OF BITS PROCESSED as a unit, which voices from computer but is fixed for each computer. |
Word |
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The LENGTH of a computer word. |
Word – Size or Word Length |
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A PHYSICAL DOCKING POINT using which an external device can be connected to the computer. |
Ports |
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IMPORTANTS TYPES OF PORTS: |
• Serial Port • Parallel Port • PS/2 • Universal Serial Bus (USB) Port • VGA Port (Video Graphic Array) • Power Connector • Firewire Port • Modem Port • Ethernet Port • Game Port • Digital Video Interface (DVI) Port |
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Connect the MICROPHONE and SPEAKERS to the sound card of the computer. |
Sockets |
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Represents the PHYSICAL and TANGIBLE COMPONENTS OF A COMPUTER, the components that can be SEEN and TOUCHED. |
Hardware |
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EXAMPLE OF HARDWARE: |
1. Input Devices 2. Output Devices 3. Secondary Storage Devices 4. Internal Components |
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A SET OF PROGRAMS, which is designated to program a WELL – DEFINED FUNCTION. |
Software |
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TWO TYPE OF SOFTWARE: |
1.System Software 2.Application Software |
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Used for EXTERNAL MODERNS and OLDER COMPUTER MOUSE. |
Serial Port |
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- Used for SCANNERS and PRINTERS - Also called PRINTER PORT - IEEE – Institute of electrical and electricians Engineers. |
Parallel Port |
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- Used for OLD COMPUTER KEYBOARD and MOUSE. - Also called MOUSE PORT. |
PS/2 |
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It can connect ALL KINDS OF EXTERNAL USB devices such as external hard disk, printer, scanner, mouse, keyboard, etc |
Universal Serial Bus (USB) Port |
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Connects monitor to a COMPUTER’S VIDEO CARD. |
VGA Port (Video Graphic Array) |
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Three – pronged plug. |
Power Connector |
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Transfers LARGE AMOUNT OF DATA at VERY FAST SPEED. |
Firewire Port |
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Connects a PC’s MODEM to the telephone network. |
Modem Port |
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Connects to a NETWORK and HIGHSPEED INTERNET. |
Ethernet Port |
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- Connect a JOYSTICK TO A PC. - Now replaced by USB |
Game Port |
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Connected flat panel LCD monitors to the computer’s HIGH-END VIDEO GRAPHIC CARDS. |
Digital Video Interface (DVI) Port |
