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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
What is a mainframe computer?
used by many organizations like doctors offices, etc. OLDEST
What are midrange servers?
used to host programs and data for small network
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
What is an embedded computer?
performed specifically for that product
What is a super computer?
cost 4-5 millions, only government uses it
What is CPU?
central processing unit where date fets processed
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)
What is an example of input, processing, and output?
- input - mouse, keyboard
- processing - CPU
- output - monitor or computer screen
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
What is hardware?
all the physical hard drives that make up the computer (ex. mouse, printer, monitor, keyboard, etc)
What is the difference between data and information?
data is raw number and information is the data
What is an IP Address?
an internet proticol address designed to every device that is on the internet
What is ISP?
internet service provider that is a computer that provides you with internet service like verizon, at&t, comcast, etc.
What are the 2 types of software?
aplication and system
What are cline computers?
the computers we use
What is the binony system?
a numbering system that is digital. 2 numbers in this system - decimal system
What are bits and bytes?
8 bits equal 1 byte. each letter is one bit.
What is extended ASCII?
language that the machine uses
What is KB, MB, GB, and TB?
- KB - kilobytes-thousand
- MB - megabytes-million
- GB - gigabytes-billion
- TB - tarabytes-trillion
What is CPU-ALU?
Computer Processing Unit-Arithmatic Logical Unit - does all the calculations
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
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
What is a device and what is a drive?
- device - secondary storage
- drive - where you insert the secondary storage
What is remote storage?
corporations/company's store elseware as backup incase something happens
What is random/direct?
- random - access in random order
- direct - can choose in what # order you want
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
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
What is RAID?
random array of independent disk that break data and put on different harddrives
what is a memory stick used for?
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
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
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
What are the 4 types of mouse?
- standard mouse
- mechanical mouse (old-style with a rolling ball)
- optical mouse - laster at bottom
- wireless mouse
What are the 2 types of electronic pens?
- OCR - optical character pecandinitia
- MICR - magnetic in character recondition
What are the 2 types of scanners?
Mechanical (old) and Flatbed (current)
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)
How do you measure the size of the monitor?
What is a flat screen and a flat panal?
- flat screen - screen flat, back is not
- flat panal - whole thing is flat
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
What is voice input?
system which converts human voice into a computer (note: windows 7 has it now)
Put the order in what 3 multimedia's came first (oldest to newest)
- 1. graphics
- 2. audio
- 3. video
What is HTML?
hyper text markup language
used in creation of websites - works well with multimedia
What is WML?
wireless markup language used for creating websites for small divices like cellphones
what is a boot process?
starts up computer
What is CLI?
command-line interface, which is a text prompt in which you can enter specific commands to be executed
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
What is the difference between sequential access and direct access?
- sequential - stored at random locations
- direct - stored at sequential locations