But the computer that everyone thinks of first is typically the personal computer, or PC.A PC is a general-purpose tool built around a microprocessor. It has lots of different parts - memory, a hard disk, a modem, etc. - that work together. "General purpose" means that you can do many different things with a PC. You can use it to type documents, send e-mail, browse the Web and play games.
In this essay, you will read about the way a computer works including hardware, software and history regarding a computer. A computer is a devise that processes, organize, displays information, and calculates. It can communicate with other computers all over the world. Computers can perform thousands of billions of calculations per second. Computers are used for business, bar codes, track inventories, home use, school work, and studies among other things.
2. CPU/ Processor : Central Processing Unit The CPU is the component of the computer that runs computer programs, is the brain of the computer. The CPU is located inside the computer case on the motherboard. The CPU fits into the motherboard’s CPU socket. The CPU speed is measured in MHz (megahertz) and GHz (gigahertz) Diagram of CPU in the motherboard 3.
The human brain is even considered a sophisticated computer. The computers that I am going to be talking mainly about, though, are the personal computers (PCs). Those are the computers with a monitor hooked up, using wires, to a large computer box that holds the operating system, and a mouse and keyboard, and maybe even speakers or an internet box. These are the computers that you will most likely use in an office. The word “computer” is technically defined as an object that can accept some input and produce some output.
It is built into a single microprocessor chip which executes program instructions and coordinates the activities that take place within the computer system. In a way, it is the brain of the computer. The chip itself is a small piece of silicon with a complex electrical circuit called an integrated circuit MEMORY : RAM & ROM Two types of memory RAM and ROM hold the instructions and data which are processed by the CPU. The main function of RAM ( Random Access Memory ) is to provide a temporary storage place for data to be processed. Therefore, when the user runs a program, the CPU looks for it on the hard disk and transfers a copy into the RAM.
It is used for a variety of processing functions and is sometimes called “The brain of the computer”. It processes 95% of the data that is used throughout the time the computer is being used. For example, someone is writing a document in the program Microsoft Word. They might notice that as they type, the cursor moves across the document to show where they are typing in their document. The graphical side of things (Displaying the document and movement of the cursor) is done by the GPU while the CPU saves bits and pieces of the document to its RAM (Electronic Chip(s) in a computer that saves data to be used later in the session that stands for Randomly Accessible Memory.).
The Central Processing Unit The CPU (Central Processing Unit) is the processor within the computer. It is a microchip which carries out all of the searching, sorting, selecting and calculating within the computer. The CPU also has an internal clock which determines the maximum speed at which everything within the computer is done. CPUs run at different speeds measured in MHz. The Intel Pentium 4 shown above runs at a maximum of 2.2GHz.
• The different types of operating systems include MS-DOS, Microsoft Office, Mac OS and Linux. Exercises A. Fill in the blanks using the words in the box. 1. An operating system is a ________ program that allows computer hardware to communicate and work with computer software.
The microprocessor itself deals with other elements in the computer. These elements provide either input or output. Input is information flowing into microprocessor and output is information that it generates or splits up (Gookin 116). The overall performance of a computer of your PC depends in large measure of its microprocessor. Clock speed is measured in megahertz (MHz), or millions of pulses (cycles) per minute (Waters 61).
Three of the most important pieces of hardware in the computer are the hard drive, the Random Access Memory (RAM), and the Central Processing Unit (CPU). First let’s look at the hard drive, this is where data is stored. When you run a program it first gets loaded from your hard drive into the RAM and then into the CPU (Torres). There are two general types of hard drives, the most common type use spinning magnetic disks for data storage and the other type is a SSD (Solid State Drive) that uses semiconductors for the same purpose (Rampur). Inside of a standard desktop hard drive you will find one to four of the magnetic disks or as some call them platters.