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What is GUI?
GUI is a graphical user interface that came into 1995 to make computers easier to use by everyone (windows 95 was the first GUI). GUI makes windowed applications
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What is a mainframe computer?
used by many organizations like doctors offices, etc. OLDEST
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What are midrange servers?
used to host programs and data for small network
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What are the 3 types of technology starting with the oldest to newest?
- 1. vacuum tube - oldest
- 2. transister - newest
- 3. I.C (integrated circuits ) - current
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What is an embedded computer?
performed specifically for that product
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What is a super computer?
cost 4-5 millions, only government uses it
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What is CPU?
central processing unit where date fets processed
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What is input, processing, and output?
- input - entering data into the computer
- processing - performing operations on the data
- output - presenting the results (what you see on your screen)
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What is an example of input, processing, and output?
- input - mouse, keyboard
- processing - CPU
- output - monitor or computer screen
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What is primary and secondary storage?
- Primary - hard drive of computer (feed drive)..internal, fixed, main computer hard drive
- Secondary - flash drive...mobile, not fixed
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What is hardware?
all the physical hard drives that make up the computer (ex. mouse, printer, monitor, keyboard, etc)
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What is the difference between data and information?
data is raw number and information is the data
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What is an IP Address?
an internet proticol address designed to every device that is on the internet
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What is ISP?
internet service provider that is a computer that provides you with internet service like verizon, at&t, comcast, etc.
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What are the 2 types of software?
aplication and system
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What are cline computers?
the computers we use
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What is the binony system?
a numbering system that is digital. 2 numbers in this system - decimal system
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What are bits and bytes?
8 bits equal 1 byte. each letter is one bit.
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What is extended ASCII?
language that the machine uses
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What is KB, MB, GB, and TB?
- KB - kilobytes-thousand
- MB - megabytes-million
- GB - gigabytes-billion
- TB - tarabytes-trillion
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What is CPU-ALU?
Computer Processing Unit-Arithmatic Logical Unit - does all the calculations
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What is RAM and ROM?
RAM - random access memory that is the higher, faster computer functions. everything used on computer takes their own individual share on RAM.
ROM - read only memory that is fixed and permanent, hard coded in computer. any problem with ROM, your computer is crashing
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What are ports and the 3 types of ports?
Ports - stocket that is found on back of computer where you plug things in
- 3 types....
- Serial - hole that has room for only 1 pin (mouse, mic, headphones, etc)
- Parallel - a lot of tiny holes in it to be used for devices that send alot of instruction at same time (printer, monitor)
- USB - flashdrive..low cost, high speed
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What is a device and what is a drive?
- device - secondary storage
- drive - where you insert the secondary storage
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What is remote storage?
corporations/company's store elseware as backup incase something happens
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What is random/direct?
- random - access in random order
- direct - can choose in what # order you want
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What is a better choice for secondary storage for flash drive, floppy disk, cd, and dvd?
- floppy - physical and compatability is low
- flash - physical and compatability is high
- CD - physical is low and compatability is high
- DVD - physical is low and compatability is high
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What is a sector and a cluster?
- Cluster - whatever you save goes to a cluster
- Sector - group of clusters
Note: every sector has a lot of clusters in it
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What is RAID?
random array of independent disk that break data and put on different harddrives
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what is a memory stick used for?
digital camera
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What is CD-R and CD-RW?
- CD-R: Reading and memory - cannot delete or edit
- CD-RW: read and writing - can edit and delete
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What is a difference between an input device and an output device?
Input Device - convert data from hyman understandable form to computer understandable form
Output Device - convert data from computer understandable form to human understandable form
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What are the 3 types of keyboard?
Standard Keyboard - what we use everyday
Ergonomic keyboard - bigger keyboard demicircle shape friendlier and safer for hands
Wireless keyboard - no wires needed
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What are the 4 types of mouse?
- standard mouse
- mousepad
- mechanical mouse (old-style with a rolling ball)
- optical mouse - laster at bottom
- wireless mouse
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What are the 2 types of electronic pens?
- OCR - optical character pecandinitia
- MICR - magnetic in character recondition
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What are the 2 types of scanners?
Mechanical (old) and Flatbed (current)
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What are the 2 types of monitors?
CRT - catahode ray tube (an older type) that spray image on screen and is heavy in weight
LCD - liquid crystal display wih best quality (newer). picture quality does not matter. (LED, LCD, plasma)
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How do you measure the size of the monitor?
diagonally
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What is a flat screen and a flat panal?
- flat screen - screen flat, back is not
- flat panal - whole thing is flat
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What are the 4 types of printers?
- 8 jet printer (oldest) - not good print quality
- laser (newest) - last a long time
- inkjet - good quality
- photo printer
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What is voice input?
system which converts human voice into a computer (note: windows 7 has it now)
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Put the order in what 3 multimedia's came first (oldest to newest)
- 1. graphics
- 2. audio
- 3. video
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What is HTML?
hyper text markup language
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What is javascript?
used in creation of websites - works well with multimedia
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What is WML?
wireless markup language used for creating websites for small divices like cellphones
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what is a boot process?
starts up computer
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What is CLI?
command-line interface, which is a text prompt in which you can enter specific commands to be executed
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What are the letters for the different drives: harddrive, floppy, USB, CD-ROM/DVD
- hardrive - C
- floppy - A (B is with more than 1 floppy)
- CD-ROM/DVD - D or E
- USB - F and above
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What is the difference between sequential access and direct access?
- sequential - stored at random locations
- direct - stored at sequential locations
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