Introduction
A computer is a programmable machine incorporating many systems devices which are manufactured and designed to process various arithmetic or logical operations in a sequential manner. This particular sequence can thus be changed promptly thus enabling the computer system devices to work out more than one kind of problem simultaneously. The computer systems thus accept the human requests in the form of input signal and gives the output results in a formatted form for humans. This whole procedure is generally known as interfacing and when the interface is between the humans and the computer system devices, it is referred to as the user interface. The computer’s basic part include memory, integrated with elements that are required for the very essential arithmetic and logic operations, being the essence of the computing systems also coupled with sequencing and control units which can govern and change the order of operations depending upon the stored data or information. The computer system devices also incorporate the peripheral devices which are actually meant for getting the required information to be entered through an external source, and facilitate the result of operations out.
History
The processing unit which is the backbone of the computer system device executes a series of instructions that enable it to read, operate and eventually store the data. The computer system devices not only include the hardware, but also softwares that are equally necessary for the functioning of the computer. The physical system devices can thus be considered as computer hardware which includes all the digital circuitry and the software is a general term which refers to a collection of computer programs and documentation procedures that are required to perform various tasks on the computers. Thus the major function of the computer system devices can be categorized into major operations or functions keeping aside their size and role. The very first and the basic is “Input”, which is the process of entering the data and programs into the computer systems, the computer thus receives the human input in the form of raw data then gives out processed data. Then comes the storage system devices which envisage the process of saving data and instructions permanently and is most commonly referred to as the storage.
Features
The processing speed of the central Processing Unit (CPU) is fast and requires faster accessing and processing. The storage devices thus perform the major functions of storing data instructions before and after processing, also storing the intermediate results of processing, which includes operations like arithmetic and logical operations, as explained earlier also. The Central Processing unit picks up data and instructions from the storage computer devices and accomplishes all sorts of data based on the instructions given and the type of data provided. Then comes the output, which produces results from data extracting useful information, and again the output is stored on the storage devices as it is required to be put somewhere before being presented to the humans in the human readable format. Control is another system device which is used to scrutinize the way in which instructions are executed and the all above explained operations are performed, thus controlling of all operations like input, processing and output.
Tips and comments
Other systema devices include registers which are also temporary storage units then there is a clock which is a circuit and is used to generate regular sequence of electronic pulses in order to synchronize operations for the processor’s components. Main input systems devices include keyboards, mouse and scanner. The main output devices include the monitor to get the output in the form of display.
