Digital Technologies Term 4

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Terms in this set (...)

Binary
What computers use to store data. The digits 1 and 0 used in binary reflect the on and off states of a translator.
Binary Numbers
Made up of binary digits (bits).
Bits
Binary digits.
Hexadecimal Numerals
Numeral system made up of 16 symbols (1,2,3,4,5,6,7,8,9,A,B,C,D,E,F)
CPU
Central Processing Unit. The brain of the computer.
RAM
Random Access Memory. Short term memory of the computer.
Hard Disk
Long term memory of the computer.
Power Supply
Converts power from the mains AC into the low voltage DC power that your computer components need.
Graphics Card
Creates the image on your screen.
Sound Card
Creates an output from your computer in the form of audio.
Motherboard
Joins all of the components of the computer together.
Optical CD Drive
Reads disks.
Network Interface Card
What your computer uses to communicate with other computers through wired or wireless connections.
Modem
Modulates carrier wave signals to encode digital information for transmission and demodulates signals to decode the transmitted information.
Router
Forwards data packets between computer networks. Works side by side with switches.
Switch
Serves as a controller, enabling networked devices to talk to each other efficiently. Works side by side with routers.
Packet (of data)
A packet is a small part of a larger file. Large files are broken down into packets so they can be sent across networks, like the internet.
Transmission Control Protocol
Verifies and arranges the packets when they are recieved.
8 Bits
8 Bits
DNS
Domain Net System
IP
Internet Protocol
Bandwidth
How much data you can move in a given amount of time.
Latency
The time it takes to complete a stage of a task.
ISP
Internet Service Provider
Web Crawler
Sometimes called a spider, is an Internet bot that systematically browses the World Wide Web, typically for the purpose of Web indexing. It checks the content of the website and categories it and put it into the appropriate index
Index
A database where information (after being collected, parsed and processed) is stored to allow for quick retrieval.
Search
When a user submits a search request a query then searches the index for matching results.
Web Browser
Software that allows your computer to access websites on the internet.
HTTP
Hyper Text Transfer Protocol - it is a language that one computer uses to ask another computer for documents.
HTML
Hyper Text Markup Language - it is a language that tells your computer how the website should look.
URL
Uniform Resource Locator - it is the website address.
SSL and TSL
Secure Sockets Layer and Transport Layer Security. They are two features that websites use to keep data secure from hackers.
IP Address
A number assigned to any item that is connected to the internet.
Internet
A group of computers and servers that are networked together.
Network
A group of things that are connected to each other.
Wi-Fi
A wireless method of sending information using radio waves.