input and output

Input is data or intructionentered into the memory of computer.The input divice is any hardware component that allow users to entered data and intruction.Example to input device that contain key user press to enter data into a computer.Includes typing area,numeric keypad and functionkeys.it is can be cordless or built-in.Second example is mouse.mouse is painting device that fits under the palm of your hand.Pointing device control movement of ointer.other type of input can entering input by the speakinginto a microphone and e.t.c

Output is some of data that has been processed into a usefull form.output device is any hardware component that can convey.information to one or more people.Output device that visually conveys text,grapics,and video information typically used with desktop computer.example to output is oudio.Audio output device is computer component that produces music,spech,or other sounds.The speakers,earphone and earbuds are comment device.Fax machine is also output device because te device that transmits and receives documents over telephone lines.

APPLICATION SOFTWARE AND SYSTEM SOFTWARE

Application software is programs designed to make users more productive.The software distributed from many type example to packages software,custom software,open source software and etc.it is also to application software is window.It is rectagular area of the screen that display data and information.

System software is programs that control the operation of the computer.It is serves as the interface between the user,the application software and the computer hardware.

computer perspective

COMPUTER AND INFORMATION PROCESSING
(csc134)
NURMIMI SHARIDA MOHD ZAKRI
2007148827
lecture:EN.SHAHADAN

COMPUTER PERSPECTIVE

computer is just a global communication. it is also make our life easy with a variable usage such as communicate with other people around the wold, gain a lot of information. get are curren issue fro the other country.besides,it is easy for student to do an assignment,research and etc.if we study aboute computer we can get many knowladges example to what software?hardware?and ect..it very benefit studying abuote computer.the computter also has a programming,operating system and ect.

a proremming perspective;computer architecture course spend corsiderable time describing the nuonces of designing a high performance memory system.they discuss such choise as write through vs wrute back,clirec mapped vs set associated,cache siging indexing,ect.the presentation usually assumer that the designer has no control over the progremm that are run and so that only choise is to try to match the memory system to need of a set of benchmark progremm.

operating system;course in operating system cover the design of the components of and operating system_ _only a small fraction of progremmer ever write this kind of code,though.on the other hand,they can access many features of the OS using system call such as "fork,work,exes,etc."this level of progremming is not gennerally covered in any course.in chapter 8,we discribe process managment,and how programmer can make usege of the process control features of UNIX and LINUX.

it is many perspective about this...diffren opinion depend to some people use..above is my computer perspective....the end.thank you.