FUNDAMENTALS OF A COMPUTER SYSTEM Flashcards
What are features of a computer?
speed
accuracy
efficiency
versality
storing and retreving
how can you classify computers?
according to physical size
according to technology
what are super computers?
*used for scientific and engineering funtion
*used in institutes like NAZA , large scale businesses and military purposes
*can solve complex mathematical problems
*Have a high computing power
*large in size , expensive and rare
what are mainframe computers?
*no.of users get connected to one comouter using no.of terminals sharing, saving and retreving data
what are uses of main frame computers?
*have relatively less physical size , computing power and are less expensive than super computers
*used in large scale buissness and with super computer transactions are done using internet
what are uses of mini computers?
*lower in physical size ,less powerful and less expensive
*known as common computers
*use in medium scale such as banks
what is known as mini computers?
few users get connected to the central computer through a few terminals share data and information
what is known as micro computers?
small computer meant for personal use
what are uses of mini computers?
*consists of small memory capacity , smaller in size less speedy and expensive
*laptop , hand held , smart phones are examples
how can computers classify according to technology?
analog
hybrid
digital
what is analog computers?
*these computers use analog signals such as environmental parameters
*speedometers, road lamps with sensors and meterological machines are examples
what is digital computers?
the computers with digital signals
what is hybrid computers?
*combination of analog and hybrid computers
*examples-ECG machine
what is the function of a computer system?
*data and instructions are fed to the computer via input device
*first go to the primary memory then those are sent to the CPU for processing.
*the processed data stored in primary memory as information is sent to output device
the data and information which are to be stored sent to the secondary storage device.
*the stored information can be sent to an output device through primary memory
*control units sends the control signals to all the devices attached to the computer system
*computer memory contains data and instructions
*when a computer programme works the relevant data and instructions are sent to cpu
what is a computer?
a computer is an electronic device which accepts or collects data and process them according to given instructions and produces desired output
