It needs power for all of its components to function properly. And, while you plug the computer into the wall to connect it to 110-volt alternating current, this is not the kind of power the machine uses. Instead, the chord from the wall plug attaches to a power supply, an electronic device that converts the standard household current that runs your vacuum cleaner and micro-wave oven into a form the computer can use. Direct current is the type of current supplied by your car battery and is the type of power your computer needs. Tape drives, which access data very slowly, regularly back up, or duplicate, the data on the hard disk drives to protect the system against loss of data during power failures or computer malfunctions.
Sound cards are quite popular today as a result of multimedia applications.
Many of the components that make up your computer are housed on a single printed circuit board called the system board or motherboard. The whole point of a computer is to carry out a series of steps or instructions called a program. Recognize and execute a series of commands or instructions provided by the programs. The power of personal computer CPUs has increased at an incredible rate. Return to circle Bits and Bytes Bits and bytes are the units of data that a computer uses.