About Computer
A computer is an electronic device for manipulating information, or data. A computer is an electronic device that takes inputs from the user, processes those data under control of a set of instructions called programs, and produces results (outputs) and stores them for future use. A computer is a programmable electronic device that takes input in raw data and processes it under a set of instructions (a program) to give a result as output. A computer is a programmable device that stores, retrieves, and processes data.
Todays computers are electronic devices that take in data (input), process this data, generate an output, and store (store) the results. A computer also has memory, which stores data, programs, and processing results.
Hardware also includes all of the internal parts of the computer, as you can see from the picture below. There are a lot of different types of hardware which can be installed within the computers, as well as connected outside. Here are some of the common single hardware components for computers you will frequently find inside of a modern computer.
Computers
Hardware is any part of your computer that has a physical structure, like the keyboard or the mouse. Software is defined as virtual programs running on your computer; i.e., operating systems, Internet browsers, word-processing documents, and so on. You probably know already that you can use your computer to type documents, send emails, play games, and surf the internet. A computer is a machine that can be programmed to perform arithmetic or logic operations in a sequence of automatic ways through the use of computer programming.
A computer can perform numerical as well as non-numerical calculations (arithmetic and logic). The computer produces an output immediately following mathematical and logical operations, and it can store this output for later use. You can also use it to edit or generate tables, presentations, or even videos.
Although the computer is capable of working only if both the hardware and the software are working together, the systems speed will depend heavily on the hardware used. The CPU (Central Processing Unit, or CPU) is responsible for processing all information coming in from programs running your computer.
TYPES OF COMPUTERS
We have four different types of computers, classified by performance, capacity, and size. We created lists of type computers, consisting of mainframes, supercomputers, workstations, minicomputers, and personal computers.
Mainframe computers
Mainframe computers are the largest computers commonly found in businesses and colleges, with thousands of people using a computer to process data. Mainframe computers are used mostly by larger organizations for mission-critical applications, usually processing large amounts of data, such as censuses, industry and consumer statistics, ERP, and financial transaction processing. Mainframe computers (colloquially, big iron) are similar to supercomputers in many aspects, with the primary difference being the fact that supercomputers focus all their raw power on a few tasks, whereas a mainframe runs thousands or millions of operations at once.
microcomputers
computers varied in size, ranging from servers, with minicomputer storage capabilities (and smaller mainframes), to hand-held devices, that could be carried around in a pocket. Like Supercomputers, Mainframe computers are massive, tower-like machines that pack lots of computing power. A mainframe is a big, powerful computer that handles the computing of many users at once (up to a few hundred users)
OTHER COMPUTERS
Standing between microcomputers and a mainframe computer is a minicomputer. A minicomputer is similar to a mainframe computer with fewer power, about the size of a refrigerator. Workstation computers have larger storage, better graphics, and a CPU that is more powerful than that in personal computers.
It can manage animation, data analysis, CAD, and create and edit audio and video. Electronic analogue computers have fast microprocessors, lots of RAM, and high-speed graphics adapters. It usually does one particular task very expertly; hence, it is in various types like graphics workstation, music workstation, and engineering design workstation.
Laptops and desktop computers are suited to do individual jobs which can be doing homework, watching movies, or in the office to do office jobs. Microcomputers are far, far cheaper than supercomputers, mainframe computers, or even minicomputers, as they are designed for day-to-day usage, which is more utilitarian than professional. Another common feature of microcomputers is that they take up a physical smaller space when compared with mainframes and minicomputers.
Microcomputers have the most minimal requirements when it comes to input/output devices. This type of computers is mostly used in big institutions like governments, banks, and big companies. Super computers are also very large in size because of the many parts and components involved in its construction.
In the late 20th century, microcomputers became the most common computer type. Throughout the 1970s and 80s, home computers were designed for domestic use, offering a few personal productivity, programming, and gaming functions, while slightly larger, costlier systems (though still cheap when compared to minicomputers and mainframes) were designed for office and small-business use. Dumb terminals (i.e., ones without computing power) attached to mainframe computers were also called workstations.
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