Hardware is useless without software.discuss
INTRODUCTION:A computer is a multi purpose electronic tool that receives input, processes it and then produces output. A computer comprises of monitor, system unit and keyboard, which comprises the hardware, programs, operating systems make-up the software and human input or operation, which is the user.A computer has three basic processes, the first process is input, data is entered into the computer under the control of a user, whom has control of the instructions executed by the computer. Input is mainly done by using the keyboard and mouse. The second process is processing of data; this is done by the computer and programs. The computer follows instructions and uses the information entered. The third and final process is output, this are the results obtained as a result of the two previous processes. It can be output onto the screen or the printer. A computer has various functions it can be used to store data, to do calculations at high speed, store formulae, conduct research, draw architectural drawings and connect to the Internet.There are several computers in the market and they are configured to work in a certain way. Thus there, are three main types of computers available. The fi
If a computer is referred to be analog then it processes its data in form of physical quantities for example weight, length, or height. It has the main collection of chips on the computer. It is loaded in the RAM during the start up routine and remains ther until the machine is switched off. It is used for output and also forms part of the communication between the user and the computer. The processor or central processing unit is the brains of the computer. They are also multitasking and multi user computers. Software tells the computer what to do. An example of a spreadsheet is Microsoft Excel. It has four main functions, firstly, loading the program, secondly, execution and termination of programs, scheduling programs and finally communication between different processes. It may be in the form of test or numbers or both. The second type of computers is the mainframe computer, these, computers are also fast, powerful and also expensive but not like the super computers. An Application Program is a computer program designed to perform a particular task, which could be manipulating numbers, text, graphics, or all three combined. This is due to the fact that there shall be no communication between the hardware components without the software. This table keeps a track to where each file can be found on the system.
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