Computer is nothing but a calculating machine. So it can be argued that it is just a calculator on steroids. The first calculator or adding machine to be produced in any quantity and actually used was designed and built by the French mathematician and philosopher Blaise Pascal. It could only do addition and subtraction, with numbers being entered by manipulating its dials.
In 1671 the German mathematician-philosopher Gottfried Leibniz designed a calculating machine which expanded on Pascal’s ideas and did multiplication by repeated addition and shifting. Leibniz was a strong advocate of the binary number system. Binary numbers are ideal for machines because they require only two digits, which can easily be represented by the on and off states of a switch.
Englishman, Charles Babbage, invented in the 1830’s a “Difference Engine” made out of brass and pewter (metal alloy) rods and gears, and also designed a further device which he called an “Analytical Engine”. His design contained the five key characteristics of modern computers:-
- An input device
- Storage for numbers waiting to be processed
- A processor or number calculator
- A unit to control the task and the sequence of its calculations
- An output device
Ada Lovelace was an associate of Babbage. She has become known as the first computer programmer.
Let’s jump few years and skip the great Alan Turing now who was an English mathematician, computer scientist, logician, cryptanalyst, philosopher, and theoretical biologist. Turing was highly influential in the development of theoretical computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general-purpose computer. The “Nobel prize in Computing” – Turing Award is named after him 🙂 We’ll cover Turing in great detail some other day.
Inspired by Babbage’s analytical engine, IBM and Dr. Aiken of Harvard designed Harvard Mark 1. It was made of switches, relays, rotating shafts, and clutches. It was 8 feet high and 55 feet long. It was the first operating machine that could execute long computations automatically. It weighed ~4284 Kilograms. Successor of Mark 1 was Mark 3 which used mostly electronic components such as vacuum tubes and crystal diodes—but also included mechanical components such as rotating magnetic drums for storage.
This was very very short history of computers. We continue with one of the most important innovations in the technology: transistor.
Simple Tapping Game!
Tap on boxes when they become red to score a Hit!
Try to score Maximum Hit!
Note : Red Button at the bottom of the screen ends the game.
Microsoft Technologies always facinating for me. And the major reasons are they are affordable, available to eveyone and this is from where I started my computer journey(Windows 95).
<– My first windows Laptop. Still supports windows 8.1 without any hassle. ❤ That’s the power of windows.
Four ways Microsoft Technologies are helping me:
‘Availble to everyone’ is too much advantaneous for developers like us. Imagine technology available to most of every person who uses computer and plus easiest available way to develop an app.
BlackBerry made its Z30 handset official on Wednesday, touting the 720p 5-inch Super AMOLED display, faster processor and latest version of BlackBerry 10 software. The phone also includes the largest battery yet in a BlackBerry: a 2880 mAh battery that the company claims can get up to 25 hours of mixed use on a single charge.
Although I didn’t find the prior model, the Z10, to be a sluggish phone, this new handset should be much quicker: It has a 1.7 GHz quad-core Snapdragon chip inside and 2 GB of internal Continue reading
Four useful tiles in 19 languages that give you quick access to connectivity settings:
• airplane mode,
You can pin each tile Continue reading
At Dropbox’s first DBX developer conference in San Francisco, CEO Drew Houston announced a new Dropbox Platform for developers, which is essentially a suite of tools to make it easier for apps to access data across devices and operating systems. Built on top of the Sync API, Houston says the new Dropbox Platform is designed to “replace the hard drive” and that “sync is the new save.” The platform is comprised of “Drop-ins,” which provide cross-platform UI components, “Chooser,” which gives apps instant access to files in Dropbox, and “Saver,” which provides one-click saving to the cloud. Dropbox also announced the Datastore API, which lets you sync data like contacts, to-do items and game state — so you can save your Angry Birds level across your different gadgets for example. Some of the third-party companies that have signed onto the new Dropbox Platform include Shutterstock, PicMonkey, Asana, Yahoo! Mail, Animoto, 1Password, CloudOn, FedEx and Fargo. Continue reading
If you were on the Internet in the late 1990’s and wanted to search for something, there’s a good chance you’d head over to AltaVista.
The name alone might have you reminiscing about the early days of the World Wide Web. But now after 18 years, the pioneering search engine is just a memory. Owner Yahoo on Monday officially killed off AltaVista, which was once one of the Web’s most popular search engines. If you visit the site now, it will redirects to Yahoo’s own search page.
Palo Alto-based AltaVista made its debut back in December 1995. For those keeping track, that’s three years before Google was founded. Continue reading