Flashcards
Computer Science All Topics
Flashcards do conjunto (62)
- 1what is a computer system ?a device that can recive data, store data, process data and output that data
- 2example of input devicemicrophone , mouse
- 3example of an output devicedisplay, text
- 4example of storageoperating system
- 5what is realiability in a computer?does the job it is desighned to do in a reasonable time frame withoutany glitches
- 6give an example if a computer is unrealiable which may cause death?life support machine
- 7how do we make a computer more realiable?1 clear desighn that satisfies the customers demands
2 must be tested
3 bought from a realiable source
4 should have regular updates
5 working with standards - 8why is for a computer to be realiableso it is secure, safe and useful over a long time period
- 9what are legal consideration in computes?data protection act 1998
the computer missuse act 1998
copyright act 1998 - 10what is the data protection act?how people in organisation have to look after the data they have about us. bellow are the ruel it must follow
- 11what is the computer missues act?unotherised acess to a computer
1using a computer to attempt to acess a program or data you are not authorised to
2 attempt to acess a computer system with intent to comit a further crime
3 and attempt to acess to a computer to change data - 12what is copy right?protect work from being coppied without the creators permission
- 13what does cpu stand for?central processing unit
- 14what is the cpu used for?aka the brain of thecomputer
responsible for all processing in the computer without it any stored data would not be processed - 15what ar the two most important parts in cpu?controol unit and arithmetic logic unit
- 16what does the controll unit doco ordinates part of the processor when a instruction is recieved
- 17what is the arthimatic logic unit used forperforms calculation and comparisons
- 18what are three things the cpu does1 fetch
2 decode
3 excute - 19FETCH DECODE EXCUTE
- 20What is the name given to the small storage locations in the CPU?registers
- 21what is clock speedmesured in hurts, amount of cycles per second
- 22what is cache memorysmall and quik to acces memory storage
- 23what is a coomputer with two cores calleddual core
- 24why is having dual core goodcan have more than one task at once
- 25what is meant by multi taskingWhen a single core CPU works on several programs at the same time
- 26what is secondary storagestorage outside the computer
- 27how many bits are in a byte?8
- 28what is binary ?0 and 1
- 29give examples of solid state storageusb
SD card - 30give examples of optical storagecd
dvd - 31give examples of magnetic storagehard drive in computer
magnetic tape
floppy disk - 32why can our phones now be smallbecause technology has advanced and we have solid state
- 33what are the numbers of the heading in a binary table128’S 64’S 32’S 16’S 8’S 4’S 2’S U
- 34which gate is this?and
- 35which gate is this?not
- 36which gate is this ?or
- 37Using an AND gate, if one input is 0 and the second input is 1, then what is the output?0
- 38Using an AND gate, if both inputs are 1, then what is the output?1
- 39Using an AND gate, if both inputs are 0, then what is the output?0
- 40Using an OR gate, if one input is 0 and the second input is 1, then what is the output?1
- 41Using an OR gate, if both inputs are 1, then what is the output?1
- 42Using an OR gate, if both inputs are 0, then what is the output?0
- 43Using a NOT gate, if the input is 1, what is the output?0
- 44Using a NOT gate, if the input is 0, what is the output?1
- 45What does ROM stand for?read only memory
- 46is rom volatileyes
- 47what does ram stand forrandom access memory
- 48why do computers need ram?1 temporary storage of data
2 to load programs needed by the cpu - 49why do we need rom?becuase it is non volatile
so you can see eg home screeg - 50what devices help people with specific needseye tracker
foot pedal
brail keyboard and printer
zoom
speakers
voice recognition - 51example of OSwindows
- 52open source operating systemandroid
- 53role of operationg systemto provide link between user and the computer
- 54what is memory manegmentkeeps track of storage devices and controls whic application has acces to which area of memory
- 55what is hexadecimala base 16 number system
- 56what units does hax use1-9 and a-f
- 57what is aciia charector set
- 58what is sound in the real worldReal world- analogue is represented in smooth curves
- 59what is digital soundDigital- made up of sample points which are joined tougher by straight lines
- 60what is open sourceOpen source means you can see the code written
- 61what is off the shelf/ propriataryA company makes the software program and release the program for use but you can’t see the code
- 62advantages of open source• See how it works
• Can modify if license allows.
• Many people can make changes and develop the code.
Informações
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- GCSE Computer Science FlashCards sobre Computer Science All Topics, criado por Caitlin Bergan-Gander em 12-02-2016.
- Criado por
- Caitlin Bergan-Gander
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- Criado por Jodie Awthinre · 12 fev 2016
- Copiado por Caitlin Bergan-Gander · 12 fev 2016
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