The four basic functions of a computer system are input, processing, output and storage. These four functions are collectively known as the IPO+S model and are used to teach the fundamentals of information systems.Know More
Input collectively refers to all the resources used in creating a program. This usually consists of a programmer entering code into a computer with a keyboard.
Processing collectively refers to all of the internal functions the computer uses to control and make sense of information. The most basic components are a control unit, an arithmetic logic unit and random access memory for temporary storage. This represents a very simple model of a computer. Modern computers will add other processing components such as a multitasking operating system.
Output is the display of information to the user. This can occur through the monitor, by way of audio through the speakers, or on paper via a printer. Output can also be written to a storage device like a CD-ROM or flash drive.
Storage consists of any means by which data can be permanently saved. Some examples include internal and external hard drives, floppy disks, CDs, DVDs and memory sticks. This component was not always present in the IPO model as it is not strictly necessary for a basic computer to function, but has been added as permanent physical memory has become a standard part of all modern computers.Learn more about Computer Help
Computer hardware is a physical portion of a computer system and is generally tasked with functions specific to that type of equipment, while software is a set of instructions for hardware to follow in performing a specific task. However, the line between software and hardware is not always distinct.Full Answer >
The three basic subsystems of a computer system are the central processing unit (CPU), the random access memory (RAM) and the storage. Each subsystem can be broken down into smaller systems, but these are the three major subsystems of any computer.Full Answer >
Several issues can cause a computer not to turn on. A faulty piece of hardware, such as the hard disk, may be responsible for the problem. Power supply may be the issue if the computer shows no sign of receiving power, such as no fun running or no lights on the front of a desktop. If using a laptop or tablet, the adaptor may not be supplying power.Full Answer >
Even though any number of reasons can cause a PC to run loudly, the problem usually lies with the heat from the central processing unit, or CPU, which makes the fan work harder and thus begin to operate loudly. Furthermore, dirt sometimes builds up in the CPU fan, causing the fan to overheat. In addition, a PC can also sometimes turn itself off because it overheats.Full Answer >