A computer is an electronic machine which is able to execute certain sets of mathematical or logical instructions automatically, with the help of a memory device such as RAM, processor, hard drive or a removable disk. Modern computers are able to do a wide spectrum of operations related to real time, such as processing calculations, scheduling of data transmissions and control of software programs. A computer system must comprise a central processing unit (CPU), a number of devices connected in parallel via bus or dedicated computer processors, and a main memory. The CPU generates the actual operating platform of the computer. Modern computers use microprocessors or instruction sets to implement instructions contained in software programs. These instructions are transmitted through a communication interface to the rest of the computer system.

The three basic computer connections are a keyboard, a mouse and a monitor. Most desktop computers are connected to a keyboard via a USB port. A mouse is used for inputting user-defined commands. Monitors allow the user to see his screen via a peripheral device connected to the computer via a disk drive, printer or video card. Floppy disk drives are widely used in desktop computers in the market today.

The three basic computer components are desktop, laptop, and mainframe. Desktop computers are the most common personal computer. A desktop computer is the smallest of all the components of the personal computer. Laptops are the largest single-user machine and have their own processing core and memory.

Desktop computers are built on a chip inside a case. A personal computer is generally smaller than a desktop computer. Desktop computers have their display screen and keyboard encased within a case. Laptops have their display screen and input device outside the case.

A computer cookie is a small file saved on a user’s computer that is used by the operating system to remember certain information. Persistent cookie files allow a user to continue using the same application for a long period of time without restarting it. Users do not have to reboot a single-user computer after editing its cookies. Persistent cookie files are saved every time a user logs on to the computer. In other words, a persistent cookie file is called a persistent cookie.

Different types of computer connections are used to access the Internet. Wireless laptop connections are wireless personal computer connections that allow wireless speakers and headphones to be used with the computer. Wired computer connections are the conventional type of computer connections. The type of computer connection used depends on the operating system and the hardware configuration. Network connections are also available for high speed access to the Internet.