All about Computers
All about Computers
In this article, you can find essential facts and information that can help you learn all about computers.
When learning all about computers, know that the computer is a general purpose electronic device that accepts data as input, processes the data according to internal instructions, and produces information. It also receives data and instructions, manipulates and processes the data into information, and then furnishes and outputs the processed results in a form that is readable, either by a person or another machine or device.
All about computers – the system.
The computer system is all about computers and computer-controlled devices that process data by executing programs. Data are essentially raw facts while information is a communicated knowledge presented in a form that makes it immediately useful for decision-making purposes.
Data processing, which is essential knowledge if you want to learn all about computers, is an activity used to manipulate data to produce meaningful information. Its objectives include providing information all about computers for planning, decision-making, and control of business operations; recording current individual transactions; and providing historical information.
Methods of data processing in all about computers include batch processing, wherein data is collected into large volumes before they are processed; online processing, which uses devices directly connected to the CPU either for data entry or inquiry purposes; real time processing, wherein processing of data is done immediately and uses terminals linked to a CPU via telecommunication lines; and distributed processing, which consists of remote terminals linked to a large central computer system.
All about computers – the capabilities.
An article all about computers would not be complete without a discussion about the capabilities of a computer. First, there is speed. Anyone wishing to learn all about computers needs to know about operating speed. The computer can process data reaching up to more than 50 million operations per second. Next, we have repetitiveness. It can tirelessly perform the same operations without getting tired or bored. Another capability is accuracy for it can perform hundreds of arithmetic operations every second and can run errorless for hours at a time. It can also store and recall information.
Knowing all about computers and their capabilities is not enough for you also need to learn about their limitations. All about computers that we know is dependent on the instructions and data given by any human being. It cannot generate information on its own. It can put information together from many sources only if it is properly programmed. It cannot correct wrong instructions. It can only detect wrong instructions but it can never correct them nor can it detect incorrect data. Any corrections must be done by the programmer. It also employs the principle of Garbage in Garbage out, which means that erroneous input will produce erroneous output. The computer also cannot come up with an original decision. Choices all about computers are limited only to those prepared for it by the programmer. Computer applications must also be quantified, which means that computers cannot predict anything unless with the use of simulation where standards are set.