PowerPoint Presentation

FOR LEARNING COMPUTERS AS END USER. RESOURCES FOR Computer Learning.

Its Functioning, Software and how to Operate it..

we will not go in details of every component, we will just take an overview and proceed. We will learn very basics first..

It is a set of input devices together with output devices and one processing unit. Input devices can be more than one and Output devices also can be more than one..

Keyboard, Mouse, USB/Flash Driver, CD Disc, Floppy Disc are examples of Input devices.

It consists of mainly Mother Board, Hard Disc, RAM, Power Supply Unit, VGA Card, Floppy Drive, Disc Drive, USB Socket, Speaker, Exhaust Fan, Power On-Off Switch. Besides these number of other useful gadgets are attached for various requirement of the end user..

All those devices or machines that we can touch, see, hear are called Hardware or Peripherals. Every Hardware or peripheral has a definite physical existence and it can be internal as well as external parts..

Software does not have any physical existence. You cannot touch or hear it, however, sometimes you can see the written codes of the software with the help of a display medium, as it has virtual existence only. Software is always inbuilt within the device..

By definition Software is a set of instructions, data or programs used to operate computers and execute specific tasks. In other words, software tells a computer how to work..

System software General-puroose software that manages basic system resources and processes written in low-level assembly language or machine code Must meet specific hardware needs: interacts closely with hardware Installed at the same time as the OS, usually by the manufacturer Runs any time the computer is on Works in the background and users don't usually access it Runs independently IS necessary for the system to function Application software software that performs specific tasks to meet user needs written in higher-level languages. such as Python and JavaScript Does not take hardware into account and doesn•t interact directly with hardware user or admin installs software when needed user triggers and stops the program Runs in the and users work directly with the software to perform specific tasks Needs system software to run Isn•t needed for the system to function.

A computer without software is nothing but an individual piece of machine and it cannot perform any task or function; similarly software cannot be productive or of any use unless installed in a computer or device..

Hardware v/s Software. Hardware vs. Software Headphones Printer MO nitor Speakers MP3 Internal Security Spreadsheets Internet Output Devices Tower Hardware Input Devices Scanner Applications Webcam Joystick Microphone Keyboard Drive Computer Software O perating Systems Windows File Sharing Mapping Programs Word OSX (Mac).

There are different types of Software. We will discuss on the most important software that every computer MUST have..

(b) Device Driver Software - instructions to control and operate the devices / peripherals connected to a computer, enabling them to perform their specific tasks. Multiple hardware and device driver function in a sequence at same time to execute a task..

(d) Computer Virus – It is a type of computer program when executed, replicates itself by modifying other computer programs and inserting its own code. If this replication succeeds, the affected areas are then said to be "infected" with a computer virus..

The general method to spread computer virus as executable files is by email. If the user opens the email and clicks on the file, the virus enters the system and affects its performance. A computer virus is also spread by visiting websites of unknown resources / unsecure domains, using USB drives, storage disks, and removable hard disks..

Every electronic device which works on electricity or magnetic field is so vulnerable that it can be hacked anytime by hackers..

What is Computer Memory. Computer Memory basically is Electro-Magnetic Signal in virtual form of existence, requiring a device to live / exist. For a layman it is something similar to a store or warehouse where all the materials are kept in a particular order / stack / sequence for handling it multiple times..

Technically Memory is a device or system that is used to store information, data or programs (sequences of instructions) for immediate use on a temporary or permanent basis in a computer or computer attachable hardware and digital electronic devices. Memory is a place that holds the data and instructions needed to process raw data and produce output..

The secondary memory (Hard Disc) is referred as storage not memory. Inbuilt Internal Memory Drive is known as Hard Disc while Portable or External Memory Drive examples are Floppy Disc, USB, CD, External Hard Disc, etc..

Units of Memory Measurement in Computer are Binary digit, Byte, Kilobyte, Megabyte, Gigabyte, Terabyte, etc..

$0 Tana aaa ikiti±. Bit - A microprocessor uses binary digits 0 and 1 to decide the OFF and ON state; (b) Nibble - A Nibble is a collection of 4 bits; (c) Byte - A Byte can be defined as the group of 8 bits..

As we learnt in the beginning, Computer is a set of input devices together with output devices and one central processing unit. Computers take information from external sources (your keyboard, mouse, sensors or the internet), store and process it, and return the result (Output) of that process. It transforms any information into electro-magnetic signals, that allow computers to actually process that information and transform it. All it happens in lightening speed. A computer is composed of many different circuits. Inside of each computer is the main circuit board called a motherboard (as if it is the heart of the computer) that contains a processor (as if it is the brain of the computer). The processor calculates each and every input information, executes assigned tasks either itself or re-assigns to relevant other inbuilt devices to perform its relevant part of task and return back to it processor. So long as the input is under process, it is stored temporarily in RAM. Once the target process is completed it is stored / saved in Hard Disc..

System User Wtndo.w Linux MacOS Operating System Application Software Hardware System Software.

Having understood the above, now you are ready as an End User (Just like a newly trained driver who has no experience but has knowledge of how-to driver or move a vehicle, though he is not a mechanic or fully skilled expert of entire machinery connectivity and its functionality)..

Should you wish more in learning computer in simple and easy understandable terms, please like, follow, subscribe and share LEARN SIMPLY within your circles of family, friends and colleagues..