The software is the instructions that makes the computer work. Software is held either on your computers hard disk, CD-ROM,. DVD or on a diskette (floppy disk) . PDF | 4 hours read | On Nov 9, , Jeleel Adekunle ADEBISI and others published 5. to know some basic things about the computer and the world. INTRO. knowledge of computer basics from where you can take yourself to the next level. Prerequisites. Knowledge of computers is not a prerequisite to follow the.
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Computer Basics. Student Edition. Complete Lesson The Front of a Computer and Peripheral Devices. Lesson The Back of a Computer (Ports ). A computer system (fig) consists of mainly four basic Basic computer Organization b. .. The basics behind the Open Source Initiative is that when. Logic and computer design fundamental 5th edition by Morris Mano Basics of Computer Networking Thomas G. Robertazzi Stony Brook University September .
Example: DOS. Refers to computer systems that support two or more simultaneous users.
Another term for multi-user is time sharing. Ex: All mainframes are multi-user systems. Distributed computations are carried out on more than one machine. When computers in a group work in cooperation, they make a distributed system.
Computer Fundamentals Tutorial
Commonly used operating system UNIX Pronounced uoo-niks, a popular multi-user, multitasking operating system developed at Bell Labs in the early s. UNIX was one of the first operating systems to be written in a highlevel programming language, namely C.
This meant that it could be installed on virtually any computer for which a C compiler existed. A freely-distributable open source operating system that runs on a number of hardware platforms.
The Linux kernel was developed mainly by Linus Torvalds and it is based on Unix. Because it's free, and because it runs on many platforms, including PCs and Macintoshes, Linux has become an extremely popular alternative to proprietary operating systems.
Windows Microsoft Windows is a series of graphical interface operating systems developed, marketed, and sold by Microsoft. The most recent client version of Windows is Windows 7; the most recent server version is Windows Server R2; the most recent mobile version is Windows Phone 7.
It superseded their earlier SunOS in Oracle Solaris, as it is now known, has been owned by Oracle Corporation since Oracle's acquisition of Sun in January This release aims more at the security part and comes with an easy to use application to harden your Desktop.
Mobile OS: A mobile operating system, also called a mobile OS, is an operating system that is specifically designed to run on mobile devices such as mobile phones, smartphones, PDAs, tablet computers and other handheld devices. The mobile operating system is the software platform on top of which other programs, called application programs, can run on mobile devices. Android is unique because Google is actively developing the platform but giving it away for free to hardware manufacturers and phone carriers who want to use Android on their devices.
Symbian OS combines middleware with wireless communications through an integrated mailbox and the integration of Java and PIM functionality agenda and contacts. The Symbian OS is open for third-party development by independent software vendors, enterprise IT departments, network operators and Symbian OS licensees.
There are three Language processors: A.
Compiler It is translator which converts the HLL language into machine language in one go. Interpreter It is a translator which converts and executes the HLL language code line by line.
It takes one statement of HLL and converts it into machine code which is immediately executed. However, It is slow in processing as compare to compiler.
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Assembler It translate the assembly language into machine code. Terminologies Register A register is a very small amount of very fast memory that is built into the CPU central processing unit in order to speed up its operations by providing quick access to commonly used values.
All data must be represented in a register before it can be processed. For example, if two numbers are to be multiplied, both numbers must be in registers, and the result is also placed in a register. Bus A collection of wires through which data is transmitted from one part of a computer to another. You can think of a bus as a highway on which data travels within a computer.
When used in reference to personal computers, the term bus usually refers to internal bus. This is a bus that connects all the internal computer components to the CPU and main memory. All buses consist of two parts -- an address bus and a data bus. The data bus transfers actual data whereas the address bus transfers information about where the data should go.
The control bus is used by the CPU to direct and monitor the actions of the other functional areas of the computer. It is used to transmit a variety of individual signals read, write, interrupt, acknowledge, and so forth necessary to control and coordinate the operations of the computer. The size of a bus, known as its width, is important because it determines how much data can be transmitted at one time.
For example, a bit bus can transmit 16 bits of data, whereas a bit bus can transmit 32 bits Clock speed Also called clock rate, the speed at which a microprocessor executes instructions.
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Am anew students and would like to get notes on introduction to computor,microsoft word, excell,internet,power point,. I am a student of 1st bca I want details of types of business software and evolution of business software for my assignment and even for seminar.So, if a virus infects the boot or MBR of a disk, such as a floppy disk, your hard drive can become infected, if you re-boot your computer while the infected disk is in the drive.
Whether you need to upgrade your computer or be aware of the problems associated with it, you need to at least know the computer parts list. Managing files: Acknowledgement Anything new started is always with mixed feelings.
Hardware failure is random. Caps Lock: Bar code readers work by shining a beam of light on the lines that make up the bar code and detecting the amount of light that is reflected back.
Motherboard This is perhaps the most important part of your computer. Ted Hoff developed the famous Intel microprocessor G chip.