Karteikarten
memory Flash cards
Karten in diesem Stapel (43)
- 1What is a computer system?Any equipment which uses computer technology
- 2What is hardware?The physical part of the computer system that you CAN touch
- 3What comes after input on the four box model?Process
- 4What does software do?it runs on the computer system and follows a set of instructions to perform a task
- 5What is an input device?any device that allows you to put data into a computer system
- 6what is an output device?It is used by a computer system to output information.
- 7Is a microphone an input or output device?Input
- 8what type of device is a projector?output
- 9What is a 4 box model?
- 10true or false? A router is a communication devicetrue
- 11What is an embedded system?a computer system which forms part of an electronic device
- 12what will an embedded system do?it will respond, monitor, control external environment using sensors and actuators
- 13what is the importance of a computer system?a computer system is one that is a able to take a set of instructions, process them and create a set of outputs. This is done by a combination of hardware and software. This can be described using the 4 box model
- 14What is the importance of an embedded system?an embedded system is a computer system with a dedicated function with a larger mechanical or electrical system such as the computer that controls the functions of a washing machiene
- 15what is a CPU?A CPU is seen to be the "brains" of a computer. it is responsible for programming on computers and other devices. it uses electrical signals to direct the computer system and carries out STORED instructions
- 16What does RAM stand for?random access memory
- 17what is the abbreviation for Read only memory?ROM
- 18What is volatile memory?It is computer memory that requires power to maintain the stored information
- 19What does RAM store?the data you ARE working on
- 20what does RAM hold?the programmes and modules that are CURRENTLY open
- 21What is the difference between RAM and ROM?RAM is a small memory holder, whereas ROM stores larger data
- 22What is BIOS?a set of computer instructions in firmware, which control input and output operations
- 23What is the definition for bootstrap?It is to load a program into a computer using a much smaller initial program to load in the desired program
- 24How many bits does a Byte have?8 bits
- 25what is the mnemonic used for memory?Big naughty boys kicked my granny twice
- 26which is the smallest unit of memory storage?a bit
- 27which type of RAM needs to be refreshed?dynamic
- 28a flash drive is an example for what memory?solid state memory
- 29is random access memory temporary?yes
- 30which RAM is the cheapest?Dynamic RAM
- 31which type of RAM is the fastest?Static
- 32What is virtual memory?a section of the hard disk drive that is used as a temporary store for some of the data in main memory
- 33what is cache memory?it is a special type of computer memory that CAN be accessed much faster than RAM
- 34what type of storage is Google drove?cloud
- 35what is virtual memory?It is a special type of memory that can be accessed much faster than RAM
- 36What does CD-RW stand for?'CD' means compact disc and 'RW' means that it is rewritable
- 37What are the steps for the 'fetch, execute' cycle?The processor fetches an instruction from the memory
The instruction is then decoded
The processor then executes the specific information - 38What is clock speed?The rate which instructions are carried out
Measured in Hz (the number of times the clock ticks per second)
With every tick of the clock, CPU can process one piece of data or execute one instruction - 39what does 1GHz mean?That a billion instructions are carried out per second
- 40Cores: What are they?they refer to the number of processors contained within a system
they affect the performance of a computer
Double the cores mean that there is double the amount of instructions that can be processed - 41What is cache memory?It is the memory that sits between the CPU and main memory
It acts as a buffer
Temporarily stores instructions from the main memory
Processor looks to cache first for instructions - 42What type of storage is most commonly found in a tablet?SSD
- 43A HDD is an example of what type of storage?magnetic