What is computer /Parts of computer/use in life

Basically, a computer is an electronic system capable of performing calculations and storing knowledge.

A machine requires multiple programs for different activities in order to accomplish certain things. For eg, it has a word processing system for letter printing, and a software called a web browser for internet surfing and browsing.

Computers do come in different shapes and sizes, such as notebooks, desktops, and smartphones, but they may perform the same or identical functions.

Beginnings

The first programmable machine had been mechanical rather than electrical, constructed by Charles Babbage in the 1830s. Unfortunately, it was never designed, so it wasn't until World War II that British code breakers installed Colossus, the first entirely electronic so programmable device throughout the world.

Colossus, though, also did not implement a variety of elements found in current computers. Finally, after the war, the great mathematician Alan Turing, who had worked with the code breakers, built a complete computer in Manchester.

From science project to everyday tool

Initially, machines were mostly of concern to physicists and engineers. But from the mouse designer Douglas Engelbart's human-machine interface experiments in the 1960s to the advent of the Apple Macintosh device in 1984, they were simpler to use and more worthy of the activities common people could do.

Machines were initially most concerned with physicists and engineers. But from the human-machine interface experiments of the mouse designer Douglas Engelbart in the 1960s to the advent of the Apple Macintosh device in 1984, they were simpler to use and more worthy of the common people's activities.

Highlights in the development of the computer

• Computers started as large racks of glass valves and wires filling several rooms and weighing up tons. Now they can fit on small microchips that are barely bigger than an ant and are millions of times stronger than the first.
• Computers have a huge variety of uses. Originally employed to break enemy codes and calculate artillery trajectories, they're now used for everything from word processing and spreadsheets to mobile phones and playing games.
• The number of computers in the world has risen incredibly. Urban myth has it that, in the 1950s, the head of IBM estimated a global market for five – yes, five – computers. But within the next few years, it's expected that there will be 2 billion computers – and that figure doesn't even include computers built into other devices.
• In the late 1960s, the American government created ARPANET, a network that allowed the few university and military computers in the US to talk to each other. This eventually turned into the internet, a global web that connects well over a billion computers – and people – to each other.

History of computer

A nice question with some 300 years long answer.

Long story short - invention of automated looms around 1750s proved a concept of “smart” mechanical devices. A variety of mechanical computing devices were invented after that, some of them to try to support huge computation needs of napoleonic france (metric system, recalculating land, taxes etc). Notable machine is Babbage’s computer that was never finished but Ada Byron defined a programming language for it.

Electricity proved to be usable for counting machines with punched cards, so Herman Hollerith created an electromechanical “computer” - counting machine fed with punched cards, for u.s. census in 1890s. That was the beginning of IBM.

The rest is history. 1900s brought interesting electrical computers, most of them having separate memory for instructions and data, all of them using punched cards/tapes. Conrad Zuse had several interesting machines.

Then, Enigma happened, and a ww2, and Alan Turing’s computing machine. US worked on a few computers for artilery caalculations, manhattan project etc, but most of them were finished after the war - eniac, edvac etc.

Then there was a cold war. US gained advantage, but russians had their technology also. US needed tech for air defense an space program. SAGE, SABRE, FORTRAN, first chess on IBM 760 are some notable projects.

Then came IBM’s model 360 and mainframe computers dominated the market. Digital memmory, COBOL, etc. Computers started looking the way we see them now.

70s brought bar code, floppy disc, hard disc, portable computer (50lbs).

80s were pc era, Xerox had some wery advanced technology at the time. Commodore, Spectrum, Apple had some of their best time. IBM hesitated at first, but dominated the industry finally (IBM PC is now kind of forgotten, but that classification still stands)

Its interesting to note that eastern block also had their own tecg, but failed to become competitive due to communist politics. Elbrus still works, but seems some 15 years behind Intel. Yugoslavian Galaksija is probably what Apple would be in communist country…

Setun is an interesting one too - a ternary computer.

(not so)fun fact - ibm manufactured machines for nazi germany, for counting jews

Lets talk about some advantages and disadvantages of computer

Now a days computer has become the most important part of life. As, it is being used in every field of life. If you are a student, you'll use computer for education purposes. If you are a businessman, you'll use computer for business purpose. It means that it's being used everywhere. There are many advantages of computer, but as you know "a coin has two faces" there are also some disadvantages of computer.

Today I am going to show you disadvantages of computer.

9 disadvantages of computer

1. Violation of Privacy

Privacy violation means that someone access your data like private photos, documents and show it to other people without your permission. There are many people who used to store their photos and videos in their computer. Someone access your private photos and show them publicly on social media sites, it'll be very bad for you if this kind of thing happens.

2. Cyber Crimes

As, computer is in every field of life, that's why there are many chances of cyber crime. Cyber crime is a crime in which a computer and network is involved. This is a big disadvantage of computer. When you open that file, there'll be a message for you in which he demands money from you to unlock all of your data.

Like this, computer hacking and bank account hacking are the most common cyber crimes.

3. Headache

Headache is also a disadvantage of computer which many of the computer users suffer from.

4. Effect Education

Another disadvantage of computer is, the long time use of computer can effect your education. It is true that many students buy computer for their studies. Because you can find any kind of information from computer by accessing wikipedia, youtube like sites.

5. Inactive Social Life

Inactive social life is another disadvantage of computer. Some computer users become addicted with computer. They don't have interest in their social life. They just need a computer to play games or for watching movies. All the time spending on computer can cause inactive social life. They do not attend any social life event. They are all the time on computer.

6. Insomnia

Too much light from video screens at bedtime affect the melatonin production giving the body the impression you aren't ready for sleep. In addition the screen emits light that suggests to the brain that it is still daytime which contributes to insomnia and sleep deprivation.

Insomnia section is copied from Huffspot.

7. Body pains

If you are using computer without any plan. Plan means sitting plan, like desk height, screen distance and keyboard, mouse position it cause body pains. It can cause back pain and also headache. You'll suffer pain in your muscles which is a disadvantage of computer.

8. Overeating

One more disadvantage of computer is overeating. You might have experience that you like to eat food like pop corns and snakes while watching movies on computer. Some people adopt this habit and used to do this every single day, which can cause overeating.

9. Poor Blood Circulation

Sitting on your desk all the day can cause poor blood circulation. It can cause other heart problems. The people who works on computer all the day and not enjoy any physical activity, are more likely assaulted by the poor blood circulation. So, this is again another disadvantage of computer.

main Advantages and disadvantages of computer |Top 5 Advantages And Disadvantages of Computer System

Advantages of computer

1 High Speed
•Computer is a very fast device.
•It is capable of performing calculation of very large amount of data.
•The computer has units of speed in microsecond, nanosecond.
•It can perform millions of calculations in a few seconds as compared to man
who will spend many months for doing the same task.

2 Accuracy
•In addition to being very fast, computers are very accurate.
•The calculations are 100% error free.
•Computers perform all jobs with 100% accuracy provided that correct input
has been given.

3 Storage Capability
•Memory is a very important characteristic of computers.
•A computer has much more storage capacity than human beings.
•It can store large amount of data.
•It can store any type of data such as images, videos, text, audio and many
others.

4 Diligence
•Unlike human beings, a computer is free from monotony, tiredness and lack of
concentration.
•It can work continuously without any error and boredom.
•It can do repeated work with same speed and accuracy.

5 Versatility
A computer is a very versatile machine.
A computer is very flexible in performing the jobs to be done.
This machine can be used to solve the problems related to various fields.
At one instance, it may be solving a complex scientific problem and the very
next moment it may be playing a card game.