1394a interface – A connector type which uses a 4-pin or 6-pin plug
AFH – Adaptive Frequency Hopping, when a device hops around frequencies to find a strong signal.
ATX – A mother board shape.
ADSL – asymmetrical digital subsubscriber line, a type of dsl, a method of transferring data over copper wires
Applications – The programmes you use on a computer.
Bandwidth – Amount of data that can be transmitted within a fixed time period
BIOS – (Basic Input/Output System) Makes sure all the other chips on the motherboard function together. Also helps with tasks while the computer is booting up to get the computer ready to run
BTX – A mother board shape.
Bus – The connections that ‘bus’ data between computer components or computers.
Berg power connectors –
BRI – Basic Rate Interface, 128kbps connection on B channel, 16 kbps on D channel
Broadband – A high speed data transfer which uses a single cable.
Broadcast topology – Sends info to all devices.
BISDN – Broadband ISDN, uses different types of services at the same time.
CMOS – complimetry metal oxide semiconducter,
Cache – stores information so it doesn’t have to be redownloaded eg webpages
CISC – Complex instruction set computer. Uses complicated sets of instructions meaning there is less instructions to programme but the task completion would be slower.
CPU – Central processing unit. The brains of the computer. Executes programmes.
Coaxial cable –
Current – Amount of power running through the wires.
Crapware – Excessive unessisary stuff tacked onto legitimate programs.
CLI – (Command Line Interface) User types command at prompt. c:\>_
DDR – Double data rate, advanced version of SDRAM, DDR can transfer data twice as fast as SDRAM (can send and receive data twice per clock cycle)
DMA – Direct memory addressing.
Docking station –
DHCP – Dynamic Host Configuration Protocol
DRAM – Dynamic random access memory, a type of RAM that stores each piece of data on a different capacitor. Most common type of memory found in computer systems.
Diskdrive – Holds, reads and writes data onto and off of disks such as CDs or software disks.
DOS – Disk operating system
DVI – Digital video interface.
DSL – digital subscriber line, used to transfer data over regular phone lines.
EIDE – Enhanced intergrated drive electronics, a faster version of IDE, transfers data at a top speed of 16.6Mbps, supports hard drives with over 250GB of data.
Firmware – Programmes somewhere between hardware and software.
Floppy disk – Square data holders, store data magnetically, slowly being fazed out.
FTP – File transfer protocol
Full-duplex – Data goes both ways at the same time
GUI – (Graphic User Interface) Menus/Icons, more visual. (most OS’s contain both CLI and GUI)
HDD – Hard Disc Drive
HDSL – High Data rate DSL
Half-duplex – Data goes both ways but only one way at a time
HTTP – hypertext transfer protocol
IDE – Intergrated device electronics, most commonly used hard drive interface on the market, supports hard drives that contain up to 540MB of data.
IDSL – Combination of ISDN and DSL.
IEEE 802.3 standard – Network connecting cable
IIS – Internet Information System, allows machine to become the host machine for a website
Internal cables –
Internet protocols – Set of rules governing communication between computers on a network
ICMP – Internet Control Message Protocol
IRQ – Interrupt request, used by the computer to request info from the CPU.
ISDN – Intergrated Services Digital Network, provides three services, BRI, PRI and BISDN
LAN – Local Area Network, a small computer network
Motherboard – The main board in a computer, holds the RAM, disk drives etc. Standard in desktops but laptops are specialised and can’t be replaced easily.
Molex/power connector –
Multi-threading – When an app is broken into smaller tasks and can run more than one task at a time. eg. Microsoft word puts text on a screen and spell checks at the same time.
NIC – Network interface card, the card that allows computers to be hooked up to a network, come in 10, 100 and 1000 Base-T configurations. The number determines how many Mbps the data can be transfered at.
NT kernal – Heart of windows OS.
NOS – Network operating system
North bridge – The chip that connects the CPU and RAM
Overclocking – Making a processer work at a faster pace than intended for it.
Operating system – Tell the computer how you want it to work.
PnP – Plug and play, devices that store their own software and can just be plugged in and used.
PING – Packet Internet Grouper
PLC – Power line communication, uses the power lines to transmit a signal.
Ports – The plugs in a computer that components connect into
PRI – Primary Rate Interface, faster than BRI
PROM – Programmable read only memory
PSWD cable –
RAID – Used for drive redundency and data protection.
Registry – Contains info about apps, users, hardware, network settings and file types.
Resistance – The resistance posed against the current, slowing the current.
RISC – Reduced instruction set computer. A CPU design in which the instructions used are smaller, this makes the computer run faster but any task takes more sets of instructions to complete.
RAM – Used to store information long term, doesn’t delete information when the computer is turned off.
ROM – Holds the information while the computer is running, deletes the information when the computer is switched off. Works as a short term memory.
Router – Sorts and routes data in a LAN
SDSL – Symmetrical digital subscriber line, a type of DSL, upload and download speeds are ‘symmetrical’
Storage devices –
Storage cards –
Standoff (seperator) –
Serial connection –
Simplex – One way transmission
Spike – Sudden uppage of electricity.
Surge – Slow uppage of electricity.
South bridge –
SATA cable –
Solid state drive – An internal read-write, non-volitile storage device that uses little power, has fast access to data and is reliable.
TCO – Total Cost of Ownership, purchase, supplies, maintanence and warrenty costs as well as price to print per page.
Token topology – Sends info to intended host.
USB standard – Can supply power the computer to devices.
VDSL – Very high data rate DSL
VDU – Visual Display Unit, monitor
VGA – Video graphics array (blue plug)
VM Ware –
Voltage – The force needed to move power through the wires.
VPN – Virtual Private Network, Connects teleworkers (remote users) to a LAN via the internet. Data is encrypted in ‘tunnels’ before it is sent.
Vapourware – A programme which is announced but no t actually written because of a lack of interest.
Wi-Fi – Also known as 802.11
WAN – Wide Area Network
WLAN – Wireless LAN
Wireless access points –
ZIF sockets –
.EXE – Executable files
ipconfig – A command prompt used to check ip addresses
ipconfig /all – A command prompt used to check ip addresses in detail
ping ipaddress – Pings computers to check that they are communicating