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Characteristics of Computer



Accuracy:  

computers operate at a very high degree of accuracy. It does not become exhausted easily to the extent of making mistakes.

They are reliable and robust. It ever makes a mistake. Most probably the error occurs due to the user rather than the computer. There may be certain hardware mistake but with the advanced technique in hand they are overcome.

Example: Only accurate robots are used to perform the operations for the patients since human hands are not flexible for making operations.




Speed:

computer is generally known for its speed. The speed of computer is measure in millions of instruction per seconds and it increases progressively as the computer develops.

The computer present in the modern world has the speed of nano and pico second. The various speed that are used by the computers from the former generations are as follows:

1 milli second=1*10^-3 second

1 micro second=1*10^-6 second

1 nano second=1*10^-9 second

1 pico second=1*10^-12 second




Reliability:

The computer responds to the instruction keyed into it without any alteration, as a result of this, it gives no room for doubt over out output. Therefore, the operator relies on it for effectiveness. 

Example include a program computer device to ring alarm to alert workers of any emergency, a programmed entry and exit door used in big companies and supermarkets, offices, etc.



Versatility:

It fits into different fields of human endeavor ranging from business, education, technology,engineering, law, commerce, agriculture, medicine, sports,etc. 

It can perform different types of tasks provided such tasks can be stated in logical way for the computer to execute.



Large Storage Capacity:

Vast quantities of data stored in paper files would become extremely bulky and require substantial storage space. Furthermore, the job of manually extracting data from such files would become increasingly tedious and time consuming as the size of the files increases. 

But with the computer,data can be stored electronically in considerable less space, and retrieve in a fraction of the time needed by the manual method. 

The ability of the computer to store, retrieve and process data, all without human intervention gives it power and appeal over that of human. So, while human can perform the same function as the computer, the difference and major benefits is that the computer can reliably execute millions of instructions in a second and stored the result in an almost unlimited memory.



Programmability:

The computer can be programmed to do all forms of activities of man. Programming in computer means the act of writing computers programs and this involves the use of special set of characters, signs, symbols, to supply instruction to the computer for execution towards achieving specific tasks (motives). This opportunity gave room for the computer to be a versatile system.



Pertinacity (Endurance):

This denotes that the computers never get tried as the humans do. If there are surplus amount of executions to be made then each and every execution will be executed at the same time period. 

They can perform their assigned task without taking any refreshment.

Example: Computers which are used for controlling the satellites.



Storehouse (Memory):

Secondary storage devices are the key for the data storage. They store the data for which the user wants to retrieve these data for future use. 

The examples for various secondary devices are Floppy disk, Optical disks (CS and DVD), Zip drives, Thumb drives etc. The data of smaller size can be easily fetched and they can be copied to the primary memory (RAM).

Example: Data Warehousing made by IBM.


Cheaper (Reduction of cost):

Computers are short term investment in order to achieve a long term gain. Though the investment is high they reduce the cost of each and every transaction. 

They reduce man power and leads to an elegant and efficient way for computing various tasks.


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