About A computer

                                                       " A computer"

A computer is a programmable device that can store, retrieve, and process data. The term "computer" was originally given to humans (human computers) who performed numerical calculations using mechanical calculators, such as the abacus and slide rule. The term was later given to a mechanical device as they began replacing the human computers. Today's computers are electronic devices that accept data (input), process that data, produce output, and store (storage) the results.



Computer overview:-
Below is a picture of a computer with each of the main components. In the picture, you can see the desktop computer, flat-panel display, speakers, keyboard, and mouse. We've also labeled each of the input devices and output devices.

Desktop computer:-

You can find further information about other types of computers and get a breakdown of the components that make up a desktop computer later in this document.

History of the computer:-
The first digital computer and what most people think of as a computer was called the ENIAC. It was built during World War II (1943-1946) and was designed to help automate the calculations being done by human computers. By doing these calculations on a computer, they could achieve results much faster and with fewer errors.

Early computers like the ENIAC used vacuum tubes and were large (sometimes room size) and only found in businesses, universities, or governments. Later, computers began utilizing transistors as well as smaller and cheaper parts that allowed the ordinary person to own a computer.

The history of the computer and when the first computer was invented.
How are computers used today?
Today, computers make jobs that used to be complicated much simpler. For example, you can write a letter in a word processor, edit it anytime, spell check, print copies, and send it to someone across the world in a matter of seconds. All these activities would have taken someone days, if not months, to do before. Also, these examples are a small fraction of what computers can do.

What components make up a desktop computer?
Today's desktop computers have some or all of the below components (hardware) and peripherals. As technology advances, older technologies, such as a floppy disk drive and Zip drive (both shown below), are no longer required or included.

Example of front of computer case
Bay
Case or Chassis
Case Fan
Optical drive: Blu-ray, CD-ROM, CD-R, CD-RW, or DVD.
CPU (processor)
Floppy disk drive
Hard drive
Keyboard
RAM (random access memory)
Microphone
Monitor, LCD, or another display device.
Motherboard
Mouse
Network card
Power Supply
Printer
Sound card
Speakers
Video card
Wearable
What parts are needed for a computer to work?
A computer does not require all the components mentioned above. However, a computer cannot function without having at the very minimum the parts listed below.

Processor - Component that executes instructions from the software and hardware.
Memory - Temporary primary storage for data traveling between the storage and CPU.
Motherboard (with onboard video) - Component that connects all components.
Storage device (e.g., hard drive) - Slower secondary storage that permanently stores data.
However, if you had a computer with only the minimum parts above, you would be unable to communicate with it until you connected at least one input device (e.g., keyboard). Also, for you to see what is happening, you would need at least one output device (e.g., monitor).

Tip
Once a computer is set up, running, and connected to a network, you could disconnect the keyboard and monitor and remotely connect. In fact, this is how most servers and computers in data centers are used.

What does the inside of a computer look like?
Computer connections
All computers have different types of connections. An example of the back of a personal computer and a brief description of each connection is found on our computer connections page.

How do I set up a new computer?
Types of computers
When talking about a computer or a "PC," you are usually referring to a desktop computer that you would find in a home or office. Today, however, the lines of what makes a computer are blurring. Below are all the different examples of what is considered a computer today.

Computers

The picture above shows several types of computers and computing devices, and is an example of their differences. Below is a complete list of computers of past and present.

Console (e.g., Xbox and PS3)
Desktop computer
Diskless workstation and Thin client
Embedded computers - The most common and used computer. An embedded computer is a computer with a specific function, found in such things as ATMs, cars, microwaves, TVs, the VCR, and other home electronics.
Hybrid computer
Laptop, portable, notebook computer
Mainframe or Supercomputer
Microcomputer
Nanocomputer
Netbook
PDA
Personal computer (aka desktop and home computer)
Server
Set-top box
Smartphone
Tablet
Who makes computers?
Today, there are two types of computers the PC (IBM compatible) and Apple Mac. There are dozens of companies that make and build PCs, and if you get all the necessary parts for a computer, you can even build a custom PC. However, when it comes to Apple, only Apple designs and makes these computers. See our computer companies page for a listing of companies (OEMs) that make and build computers.

Comments

Post a Comment

Popular posts from this blog

What is Tree and Use off it. (English / hindi )

Image
                                     What is Tree and Use off it. In plant science, a tree is a perpetual plant with a lengthened stem, or trunk, supporting branches and leaves in most species. In some utilizations, the meaning of a tree might be smaller, incorporating just woody plants with optional development, plants that are usable as timber or plants above a predefined tallness. In more extensive definitions, the taller palms, tree plants, bananas, and bamboos are additionally trees. Trees are not a scientific classification but rather incorporate an assortment of plant species that have freely developed a trunk and branches as an approach to tower above different plants to go after daylight. Trees will in general be seemingly perpetual, some arriving at a few thousand years of age. Trees have been in presence for 370 million years. It is evaluated that there are a little more than 3 trillion develop trees in the world.                                     A tree common
Read more

Gasses kya hi in Hindi And English.What is Gasses.

Image
For All User.                                                       Gasses on Earth पृथ्वी का वातावरण:- पृथ्वी का वायुमंडल पृथ्वी के चारों ओर गैसों की एक परत है और पृथ्वी के गुरुत्वाकर्षण द्वारा आयोजित किया जाता है। इसमें आमतौर पर 78% नाइट्रोजन और 21% ऑक्सीजन 0.97% आर्गन और कार्बन डाइऑक्साइड 0.04% विभिन्न गैसों और जल वाष्प की मात्रा का अनुसरण करते हैं।               गैसों के इस मिश्रण को आमतौर पर हवा के रूप में जाना जाता है। वातावरण दिन और रात के बीच उज्ज्वल सौर विकिरण को अवशोषित करके और तापमान चरम सीमा को कम करके पृथ्वी पर जीवन की रक्षा करता है। यह धीरे-धीरे अधिक पतला हो जाता है और अंतरिक्ष में दूर हो जाता है। वायुमंडल और अंतरिक्ष के बीच कोई अचूक सीमा नहीं है। वातावरण के द्रव्यमान का सत्तर प्रतिशत ग्रह की सतह से 11 किमी अंदर है। हवा की संरचना:- जैसा कि नासा ने संकेत दिया है, पृथ्वी के वायुमंडल में गैसों में शामिल हैं: नाइट्रोजन               - 78 प्रतिशत ऑक्सीजन                - 21 प्रतिशत आर्गन                     - 0.93 प्रतिशत कार्बन डाइऑक्साइड     - 0.04 प्रतिशत नियोन, ह
Read more

Units of Measurement (Hindi/English)

Image
                                                         Units of Measurement Logical Units the SI and Metric Units: Mr. Causey shows logical units of the SI framework, the decimal standard for measuring, and the CGS framework. Mr. Causey likewise shares the major prefixes and their implications. Science estimations depend on the decimal standard for measuring, so it is significant that you know the measurement base units and prefixes.  Units of the SI Framework  There are seven base units in the SI framework:  the kilogram (kg), for mass  the second (s), for time  the kelvin (K), for temperature  the ampere (A), for electric flow  the mole (mol), for the measure of a substance  the candela (disc), for glowing force  the meter (m), for separation  The Seven SI Units: This figure shows the basic SI units and the mixes that lead to increasingly complex units of estimation.  It ought to be evident that the move into present day times
Read more