They are classified according to purpose, data handling and functionality. List common types of computers, and discuss their main features. Graduate students actively pursuing research under the guidance of an academic supervisor play an active part in a variety of academic societies, both international and domestic, including the ieee, acm, ipsj, and ieice. Sometimes we forget that the smartphone is just a palmsized version of our desktop pc. It can quickly store and retrieve large amounts of data. With a lot happening on the web, it becomes an utmost need to secure the content from loss and interception as there hovers a constant vision of. Computer is the most powerful machine in todays world. It is responsible for transferring files from server to a computer and vice versa. It can execute a prerecorded list of instructions a program. List common types of computers, and discuss their main. Pdf documents can be categorized in three different types, depending on the way the file originated. There are a lot of terms used to describe different types computers. Now this time we used that computer its digital computer. Computer hardware consists of electronic and mechanical elements of a computer.
They have the ability to store numerous programs, but lack in. A computer can perform task very quickly and accurately. You will be surprised to know that computer can perform millions 1,000,000 of instructions and even more per second. Definition a computer is a machine that can be programmed to manipulate symbols. Every computer has different hardware specifications, but there are some basic components that are common to all of them.
Computer networks a group of two or more computer systems linked together. Most of the beginners confused about types of computer applications and it is not easy to divide computer applications into any exact categories. This article discusses various types of computer software applications. Data is stored on magnetic tape in the form of magnetic spots. Local area network is a group of computers connected to each other in a. The user directly interacts with the application programs for performing a task in a system. Most of these words imply the size, expected use or capability of the computer.
At the most basic level, a computer is a device consisting of three pieces. It takes only few seconds for calculations that we take hours to complete. After completing this chapter you should understand. Personal computers computer system dedicated to a single user. File transfer protocol ftp is one of the oldest server types. How it was originally created also defines whether the content of the pdf text, images, tables can be accessed or whether it is locked in an image of the page.
The monitor, keyboard, and mouse all plug into it using cables or in some cases, using a wireless technology. A computer network is a group of computers linked to each other that enables the computer to communicate with another computer and share their resources, data, and applications. A computer network can be categorized by their size. Can adopt technology developed for larger operating system often individuals have sole use of computer and do not need advanced cpu utilization of protection features. Computing homework revision exercise computer systems unit computer structure int 2 write down d. Ftp server ensures the security and integrity of data during the transfer. This type of computer performs the work immediately after it is given a problem. There are variety of monitor available in the market such as, crt monitor, lcd monitor, touch screen monitor, tft monitor etc. The computer gets infected through the replication of malicious code.
We cannot do any thing useful with the computer hardware on its own. On the basis of size the computer can be classified into. Computers differ based on their data processing abilities. Some of the applications softwares are browsers, email clients, word processors, spreadsheet, database programs and many more.
These computers deal with actual numbers and the answer to the problem is obtained by counting. This is and electronic device which is used to manage the power supply of computer. It has to be driven by certain utility programmes called software which are stored in the computer system. Students active in the research of information systems. While a mac is a pc, most people relate the term with systems that run the windows operating system. Some of the most common viruses are, boot sector virus. Software it is a collection of programmes written to bring the hardware of a computer system into operation. Basic calculators, graphic calculators, scientific calculators, programmable calculators, and calculators used for accounting and other financial purposes. Computer literacy part 3 computer types and functions. The computers worked of system some types of instruction are.
These computers work according to a set of instructions called programme. Essential features for your laptop or desktop computer. With adobe acrobat dc, you can convert various file formats into a highquality pdf thats easy to share and looks great on any screen. Peer to peer workgroups the computers are connected by a network, however, there is not a server present. The fundamentals of computer systems design and organization are presented, and the conventional procedure for the xecution of computer programs is described.
The personal computer pc defines a computer designed for general use by a single person. The higher the speed of the processor, the faster the computer will be able to handle multiple programs and activities. It consists of a large box called the system unit that contains most of the essential components. Different kinds of languages have been developed to perform different types of work on the computer. Its impossible to imagine life without a computer nowadays. We do our work, entertain ourselves and find out what we need to know via computers. Local area network lan metropolitan area network man wide area network wan personal area network pan a lan is a network that is used for communicating among computer devices, usually within an office building or. Read the following techspirited article to know more.
Micro computer microcomputer is at the lowest end of the computer range in terms of speed and storage capacity. Computer security is one of the most important issues in organizations which cannot afford any kind of data loss. Io devices keyboards, mice, display screens, small printers. Types of computer languages with their advantages and. With adobe acrobat dc, you can quickly export pdfs into other file formats and even edit text within the pdf. A computer virus is one type of malware that inserts its virus code to multiply itself by altering the programs and applications. According to functionality, type of computers are classified as. Now, computers use wifi and broadband connections to blaze their way through multimedia content from live streaming news to movies to multiplayer games and much more. Application software is a program or a group of program designed for the enduser to perform a specific task in a computer. A computer needs both hardware and software in order to work. A desktop computer that has a more powerful processor, additional memory and enhanced capabilities for performing a special group of task, such as 3d graphics or some game development. It is commonly used by web servers, it enables user to upload, edit or delete files from websites using ftp clients. It responds to a specific set of instructions in a welldefined manner.
Ane overview of the major features and interactions of the hardware and software components of modern computer systems is also included. Types of computer on the basic of size with there features. It is made of plastic coated with magnetic material. Explain different types of storage devices perfect. Pcs were first known as microcomputers because they were a complete computer but built on a smaller scale than the huge systems in use by most businesses. Calculators are computers that carry out computers most basic tasks calculations. The 4004 processor was introduced on november 15, 1971, and originally ran at a clock speed of 108khz 108,000 cycles per second, or just over onetenth a megahertz. General purpose computers are designed to perform a range of tasks.
Here are some essential computer features for desktop and laptops to keep in mind when choosing a laptop or desktop computer for your small business. Notes on characteristics of computer extra references. While the term computer can apply to almost any device that has a microprocessor in it, most people think of a computer as a device that receives input from the user through a mouse or keyboard, processes it in some fashion and displays the result on a screen. According to purpose, computers are either general purpose or specific purpose. Different types of networks depending upon the geographical area covered by a network, it is classified as. Microprocessor types and specifications page 2 of 158 file. But digital computer takes is not introduction of computers. Server a computer that has been optimized to provide services to. Clientserver the computers are connected by a network, and there is a server present. Computer viruses come in different forms to infect the system in different ways. Basically, languages can be divided into two categories according to how the computer understands them. At present there is no clear definition available to categorize computer applications.
361 890 141 444 663 774 1138 23 933 395 1027 962 30 332 605 1496 654 625 1286 146 1486 680 145 445 678 555 1256 143 1158 635 323 523 350 1346