A computer is an electronic machine which is able to execute certain sets of instructions automatically, thereby performing operations. Modern computers are able to do multiple sets of operations such as logical or arithmetic operations. These operations are executed by the computer software that is embedded into the CPU (organisational processing unit) of the computer. These tasks are managed by a central processing unit (CPU) which is a device inside a computer and is controlled over a network. Modern computers are able to perform multiple sets of operations even though they are present in a single computer system.
There are many types of computers available in the market. These computers include desktop, laptop, personal computer, mainframe computer systems, network computers, etc. Today there has been a dramatic growth in the number of computers used in daily business processes and other industries. A computer helps in processing large amounts of data which is necessary in various fields. In order to operate a computer, it is essential to understand the computer technology and how it works.
Computer technology includes different types of hardware, such as keyboards, processors, memory modules, graphics cards, hard diskettes, scanners, printers, USB, etc. The computer hardware is used to control the operation of a computer. Today there are many types of add ons are available for the computers. These add ons are also known as software and they are installed with the operating system. The computer systems includes different types of operating systems, computer networking technologies, software applications, etc.
Desktop computers refer to a type of personal computer that is small in size and designed for use on the desktop. These computers are used for regular computing needs. A notebook computer refers to a type of computer that is smaller than a desktop computer but larger than a Laptop. Notebooks are ideal for carrying along with the user while doing work as they have a lightweight feature.
A microprocessor is embedded inside a personal computer and it controls the various different functions of a computer. The type of microprocessor that is installed in a PC varies according to the model of a PC. A typical model that is manufactured by Microsoft includes an Intel Pentium processor and an AMD Athlon II+.
Computers can be divided further into three categories based on the hardware that they are based on. The first category of computers consists of PCs that utilize a central processing unit (CPU) for processing data. The second category of computers consists of mini-desktops that utilize a central processing unit and a main memory for storing applications and operating system software. The third category consists of mainframes that are similar to a server but have a higher processing power and are mostly used for high bandwidth processing. Desktop computers are ideal for desktop computing needs and they are available in various sizes and designs to meet individual requirements.