Definition a computer is a machine that can be programmed to manipulate symbols. Computer programs produce results by manipulating data. They are minicomputer, micro computer, mainframe computer and super computer. Pdf on nov 9, 20, jeleel adekunle adebisi and others published. Notes on classification of computer on the basis of size. The computer central processing unit cpu inputoutput io devices memory. This chapter introduces the student to what a computer is, classifies computers into different categories, compares the different classes of computers and also introduces the keyboard as as a basic input device. Mainframe computer is the large sized computer that covers about sq feet.
A computer virus is an unwanted malicious program designed to cause damage to computers on a large scale. 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. 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. For example, a file server is a computer and storage device dedicated to storing files any user on the network can store files on the server. Machine language consists of strings of binary numbers i.
General purpose computers are designed to perform a range of tasks. A computer can be defined as a fast electronic calculating machine that accepts the data digitized input information process it as per the list of internally stored instructions and produces the resulting information. The devices may or may not belong to the person in question. Advancements in networking techniques, protocols and so on have made a profound impact in areas of communication and learning. The most powerful computers in terms of performance and.
Super computer is the fastest, most expensive, big in size, and most powerful computer that can perform multiple tasks within no second. If you have any doubts please refer to the jntu syllabus book. Types of server a server is a computer or device on a network that manages network resources. Most common are keyboard and mouse example of input devices.
These are lecture notes for ame 20214, introduction to engineering computing, a one hour sophomorelevel undergraduate course taught in the department of aerospace and mechanical engineering at the university of notre dame. Computer hardware is the collection of physical elements that constitutes a computer system. Hardware and software in this section of notes you will learn about the basic parts of a computer and how they work. Use these computer notes to familiarize yourself with basic computer hardware. A program is a sequence of instructions written to solve a particular problem. This is the most common type of computers used in the office or at home.
A print server is a computer that manages one or more printers and a network server is a computer that. Basic computer hardware questions are easy to remember and can count for easy marks. These types are grouped together into two major computer classes, comprising sequential or conventional computers, and parallel computers, respectively. Topics in our studying in our computer networks notes pdf. Types of networks models of networking appropriate to students ncte recommendation to students some relevant terms.
Oct03 2 desktop systems personal computers computer system dedicated to a single user. You will learn about the different types of computers, how they process information and how individual computers interact with. In these computer networks notes pdf, we will study the concepts of data communication and computer networks which comprises of the study of the standard models for the layered protocol architecture to communicate between autonomous computers in a. They have extended the power of a computer beyond the expanse of a room. Many many thank for providing such type of valuable notes. Below is the pdf notes for the chapter 1, and its title is fundamentals of computer this is the content that you can find in the pdf.
Wans are used to connect lans and other types of networks together. Software is a set of programs, which is designed to perform a welldefined function. Personal computers computer system dedicated to a single user. A computer virus is a program that may disturb the normal working of a computer system. Io devices keyboards, mice, display screens, small printers. Types of programming languages computer xi reference notes.
While a mac is a pc, most people relate the term with systems that run the windows operating system. Any kind of computers consists of hardware and software. A computer is a machine that can be programmed to manipulate symbols. It is slower device than magnetic disk or optical disk. The expression by default means if everything is not yet changed from the original. It can execute a prerecorded list of instructions a program. In r and r15,8units of r09 syllabus are combined into 5units in r and r15 syllabus. Programming languages easier to understand than cpu instructions. There exist several types of general purpose computer systems. Supercomputers are used to study the origin of the universe, the darkmatters. Computer literacy part 3 computer types and functions. Hardware is the physical components of a computer system e. Computer studies notes form 1 free download kcse revision pdf. Computer languages types of computer languages around the world language is a source of communication among human beings.
Fundamentals of computer notes chapter 1 in pdf 9th class. Computers differ based on their data processing abilities. Computer security and ethics notes chapter 6 in pdf 9th. About basic computer hardware every part of your computer is the result of years of research and development. Data is stored on magnetic tape in the form of magnetic spots. Ii, computer sizes and power computers can be generally classified by size and power as follows, though there is considerable overlap. Types of computerscomputer fundamentalslecture notes docsity. It responds to a specific set of instructions in a welldefined manner. Computer networks have shrunk the world and brought people together.
Virus attaches itself to files stored on floppy disks, usbs, email attachments and hard disks. Computer programming notes pdf download engineering 1st year. Lesson 1 types of computers, how they process information and how individual computers interact with other computing systems and devices in this section we will cover computer hardware. Arcnet attached resource computer network arcnet is one of the oldest, simplest, and least expensive types of localarea network protocol, similar in purpose to ethernet or token ring. Can change the color of outline and fill of added figures and. Different types of networks depending upon the geographical area covered by a network, it is classified as. It is made of plastic coated with magnetic material. They have the ability to store numerous programs, but lack in. A small, singleuser computer based on a microprocessor. The personal computer pc defines a computer designed for general use by a single person.
The class of sequential or conventional computer systems comprises. Similarly, in order to communicate with computer user also needs to have a language, that should be understandable by the computers. Using pdf notes, you can easily add text notes, highlight an important things by choosing a pen or draw geometric figures in pdf docs. Types, computer, classification, functionality, speed, cost, microcomputer, analog, digital, hybrid, device. There are three main types of computers, mainframes, minicomputer. 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. Types of military computer forensic technology key objectives of cyber forensics include rapid discovery of evidence, estimation of potential impact of the malicious activity on the victim, and assessment of the intent and identity of the perpetrator. Aug 26, 2018 cbse notes for class 8 computer in action networking concepts. A personal area network pan is a computer network used for communication among computer devices, including telephones and personal digital assistants, in proximity to an individuals body. Computer organisation chapter 1 basic structure of computers computer types. Since the advent of the first computer different types and sizes of computers are offering different services.
Classification of computers type of computer computer notes. Lan,wan,man today, we will discuss the main types of computer networks on the basis of the maximum distance covered where they can be accessed and operate. A data bus can transfer data to and from the memory of a computer, or into or out of the central processing unit cpu. Technology size types of computer technology the computer can be divided into 3. Explain different types of computer networks lan, man, wan. Besides the basic computer, some special devices and software may be required especially for computer graphics.
Types of buses in computer o level computer science. Cbse notes for class 8 computer in action networking concepts. Apr 08, 2015 34 replies on the best computer science as and a level notes july 17, 2019 at 10. Computer programming notes pdf download engineering 1st.
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. There are two types of programming languages, which can be categorized into the following ways. Computer hardware refers to the physical parts or components of a computer such as the monitor, mouse, keyboard, computer data storage, hard drive disk hdd, system unit graphic cards, sound cards, memory, motherboard and chips, etc. Aug 27, 20 02 types of computer forensics technology notes 1. This language is the most understandable language used by computer to perform its operations. Best computer notes pdf in english for all competitive exams. Explain different types of storage devices perfect. These notes are useful if you are the student of federal board in pakistan. Very powerful, used by large organisations such an banks to control the entire business operation. Types of computer networks find notes the easy way.
Super easy short computer notes to improve computer literacy and your it skills. The salient feature of computer graphics is the creation and manipulation of graphics artificial images by computer. Explain different types of storage devices perfect computer. For example, every computer requires a bus that transmits data from one part of the computer to another. The system software is a collection of programs designed to operate, control, and extend the processing capabilities of the computer itself.
Basic of networking a computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other. The fastest and most powerful type of computer supercomputers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations. These notes are according to the r09 syllabus book of jntu. A hybrid computer system setup offers a cost effective method of performing complex simulations. Aug 27, 2018 these notes are useful if you are the student of federal board in pakistan. Tags dca notes of types of computer different types of computer different types of computer systems essay on types of computer example for types of computer how many types of computer most common types of computers most popular types of computer viruses notes of types of computer notes on types of computer pgdca notes of types of computer top. It can quickly store and retrieve large amounts of data. If this file is copied to a computer, virus is also copied to the computer. Types of computer computer awareness notes types of computer initially, computers are classified on the basis of their size, speed and cost but now there are many more attributes attached to them. Can you tell which major components hardware and software are needed for computer graphics.
They are classified according to purpose, data handling and functionality. In this lesson will cover the different types of computers and their size, power, and purpose. Computer networks pdf notes free download cn notes. According to purpose, computers are either general purpose or specific purpose. Can adopt technology developed for larger operating system often individuals have sole use of computer and do not need advanced cpu utilization of. Below is the pdf notes for the chapter 6, and its title is computer security and ethics this is the content that you can find in the pdf. A computer virus is a malicious software program malware that can infect a computer by modifying or deleting data files, boot sector of a hard disk drive or causes a software program to work in an unexpected manner a computer virus resides on a host computer and can replicate itself when executed. So we can say that the computers are classified based on. This interconnection among computers facilitates information sharing among them.
Computer objective question and answer by sankalp ias in hindi. On the basis of size there are four types of computer. Input device translate data from form that humans understand to one that the computer can work with. Types of buses in computer a bus is a collection of wires through which data is transmitted from one part of a computer to another. Computer notes with diagram by deserve academy in hindi. Cbse notes for class 8 computer in action networking. If this is the wrong level of detail for you is too detailed then you may prefer the very readable books. Computers may connect to each other by either wired or wireless media. Tech 1st year study materials and lecture notes for cse, ece, eee, it, mech, civil, ane, ae, pce and all other branches. Martin, computer data base organization, prentice hall, 1977 what every dp vice president should know. There are basically two types of local area networks namely.
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