Hardware Flashcards
Bit
Like an atom; 0 or 1; binary digit
Byte
8 bits, can store 1 letter
ASCII
Encoding represents each typed letter
Central processing unit
Electronic circuit that carries instructions with operations; brain of commuter
Graphics processing unit
Can handle more than CPUs so creating images for display
System on a chip
A circuit with all the components; useful for mobile; Raspberry Zoi
Random access memory
Allows data to be read instantly; stores info when powered on only
Pixel
Physical point in roster image; smallest element of picture on screen
Retina display
Apple brand, higher pixel density
Cathode ray tube
Vaccuum tube with electric guns and phosphorescent screen to view images
Liquid crystal display
Flat panel uses light modulating properties of liquid crystals
Light emitting diode
2-lead semiconductor light source; emits light when activated
Plasma display
Use small cells with electrically charged ionized gases
Organic light emitting diode
Organic compound that emits light because of electric circuit; works without a backlight
High def multimedia interface
Transfers uncompressed video data or digital audio data to display
Mini display port
Apples mini audio visual digital interface; better resolution
Video graphics array connector
Pin connector, carries analog video signal; currently being phased out
Bluetooth
Wireless data transfer over short distance
USB 3.0
Super speed USB; problems: nonreversible, super big
Thunderbolt
Intel hardware interface to connect peripherals to a computer
Lightning connector
Power connector and computer bus by Apple
Three rules of hardware
Over time: smaller, mechanically simpler, and faster/more efficient
Moores law
Power will double every 18-24 months
Where do computers start counting?
0
Difference between CPU and GPU
CPU does one thing at a time/linear, single thread processing; GPUs do a lot at a time- parallel processing
Ethernet
Internet on a cable
Wifi
Wireless fidelity; wirelessly broadcast internet conductibility
Cellular data
LTE: long term evolution (4G)
Router v modem
Modem is interface between broader cable and specific home network, goes in wall to decode signal to make usable in house; router broadcasts wifi, takes signal from modem and broadcasts wirelessly
