The Computer Central Processing Unit

1860 Words4 Pages

Every day the majority of us interact with computers in one way or another. Be it the computer we use at work or home, the computers in some of the newer cars, or even our cellphones, which are just small computers, we rely on computers for a lot of things. But not many people know how a computer actually works. What’s inside of a computer that makes everything it does possible? 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. These platters are each 3.5 inches in diameter, different sizes are used depending on the device, such as the laptop version which is 2.5 inches, and in mobile devices some platter can be as little as 1 inch. The platters are coated in a magnetically sensitive material and stacked millimeters apart on a spindle. Also inside the drive is a motor that spins the spindle and platters at speeds of: 4,200, 5,400, 7,200, 10,000, and 15,000 RPM (Revolutions per Minute). The speed at which the platters spin is the primary factor in how fast the data can be read. Data is read or written on the disk in a series of bits, either a “0” or “1”. The bits are represented by the orientation of particles in the magneticall... ... middle of paper ... ...hat’s inside my personal computers and hopefully you will too. Works Cited Huang, Angelina. What Is A CPU and What Does It Do? . 29 March 2010. Web. 4 December 2013. InetDaemon. CPU - Central Processing Unit. 26 October 2013. Web. 1 December 2013. Jacobi, Jon L. How It Works: Hard Drives. 13 September 2006. Web. 28 November 2013. Lee, Hutchinson. Solid-state revolution: in-depth on how SSDs really work. 5 June 2012. Web. 30 November 2012. Rampur, Stephen. Hard Drive Types. 5 January 2012. Web. 28 November 2013. Shimpi, Anand Lal. The Haswell Review: Intel Core i7-4770K & i5-4670K Tested. 1 June 2013. Web. 4 December 2013. Torres, Gabriel. How a CPU Works. 26 September 2005. Web. 1 December 2013. Tyson, Jeff and Dave Coustan. How RAM Works. 25 August 2000. Web. 30 November 2013. Woligroski, Don. How Many CPU Cores Do You Need? 29 April 2009. Web. 5 December 2013.

Open Document