Friday, December 30, 2011

Understanding Of Computer

The word Computer comes from the Latin that means Computare count. In English is termed to compute.

By the definition of laptop is translated as a group of electronic tools that employment along, will settle for information (input), method information (process) and supply data (output) furthermore as coordinated below the management program stored in its memory.

So how will we tend to describe the pc as follows:

Computer System How it Works :
  1. Input devices, can be a computer hardware whose function is to enter information into the computer memory, such as keyboard, mouse, joystick, and others.
  2. Processors, is that the main device that manages the entire activity pc pc itself. The processor consists of two main components, namely; 
    • Management Unit (MU), will be a significant a part of the processor that controls all the devices included within the computer, ranging from the input device to an output device.
    • Arithmetic Logic Unit (ALU), is an element of a special processor information processing arithmetic (add, subtract, etc.) moreover as information logic (comparison).
  3. Memory is a data storage media on the computer.

    Memory is divided into two kinds, namely;
    • Read Only Memory (ROM), that is memory that may solely be browse alone, cannot be modified and removed and has been crammed by the pc manufacturer. The contents of ROM is needed when the pc is turned on. Commands available in the ROM will be partially transferred to the RAM. The command that is in ROM include the operating system command to read from the disk, the command to check all the equipment in the system unit and a command to display a message on the screen. ROM contents will not be lost even though there is no electricity. But at this present moment ROM has been progressing and many kinds, including:
      • PROM (Programmable ROM), a ROM that we can come back with the note program may only be a one-time change after it can no longer be programmed.
      • RPROM (Re-Programmable ROM), an outgrowth of the PROM version where we can make changes in accordance with the desired repeatedly.
      • EPROM (Erasable Program ROM), a ROM yangdapat we can delete and re-program, but how to eliminate it by using ultraviolet light.
      • EEPROM (electrically erasable program ROM), recent developments of the ROM where we can remove the program ROM mengubahdan using teknikelektrik. This EEPROM is the type most widely used today.
    • Random Access Memory (RAM), from its name we can interpret that the RAM is memory that can be accessed randomly. RAM serves to store the programs that we were for a time (power on) if we turn off the computer, then all data stored in RAM is lost. The purpose of this RAM is to accelerate data processing on computers. In order for the data that we make can not be lost when the computer is turned off, it would require an external storage media such as diskette, hard disk, flash disk, PCMCIA cards and others.
  4. Output Device, could be a laptop tool that enables you to get output, whether or not or not it's to the paper (hardcopy), to the screen (softcopy) or output a sound. for instance a printer, speakers, plotters, monitors and lots of others. From the on top of rationalization we are able to conclude that the principles of laptop work begins getting into information from the input device, then {the information|the info|the information} is processed as such by the CPU in step with what we wish and processed data that has been stored in laptop memory or disk. the information stored will we tend to see the result through the output device.

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