Flashcards
test revision
Cards in this deck (18)
- 1What is a computer system?A computer system is able to take a set of data inputs, process them and produce outputs. it does this using hardware and software
- 2Define and input device.It is used to enter data into a system.
- 3Name 5 input devices?1. keyboard
2. microphone
3. web cam
4. touch screen computer
5. scanner - 4Define and output device.An output device is used to produce the results of data processed by the computer.
- 5Name 5 output devices?1. printer
2. headset
3. computer screen
4. webcam
5.speakers - 6RAM what does it stand for?random access memory
- 7ROM what does it stand for?read only memory
- 8what does volatile mean?Volatile means when the computer is switched of the contents of the RAM are lost.
- 9RAM or ROM which is volatile?RAM is volatile and stores data ands instructions.
- 10What is hardware?Computer hardware is the physical parts of a computer such as the keyboard or mouse.
- 11what is software?Software is the programs used by the computer for example windows 8.
- 12Memory order?bit = big = binary digit
nibble = naughty = 4 bits
byte = boys = 8 bits / 2 nibbles
kilobyte = kicked = 1024 bytes
megabytes = My = 1024 kilobytes
gigabytes = granny = 1024 megabytes
terabytes = twice = 1024 gigabytes - 13If a computer has a clock speed of 4GHz how many instructions can it carry out per seconds?4 billion
- 14If a computer has a clock speed of 2.4 MHz then how many instructions can it carry out per second ?2.4 million
- 15what type of storage would be most common in a computer tablet?SSD (solid state drive)
- 16Hannah is a university student she needs to carry lots of work between school and home what would be the most suitable storage device to do so?Cloud Storage
- 17What does the NOT gate do?The not gate take the input information and outputs the opposite.
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