Bytes of the day

Do you Know?

When Apple introduced the touch-screen technology, no one believed that it could evolve into what we see now. They simple ignored it.

Fifth-Gen Computing : Are We at it? (Part-2)

.............Continued from Part-1

Yesterday, we examined what was there before computers and two popular manual calculating devices. Today, we'll look at semi-automatic calculating devices and a new group of electromechanical devices.

Semi-Automatic Calculating Devices:-

Pascaline

Staffelwalze

1. Pascaline (Pascal's adding machine) (1642):- It was developed by Blaise Pascal and consisted of a brass rectangular box with eight movable dials to add sums up to eight digits long.
2. Staffelwalze (the step reckoner) (1671):- German Mathematician and philosopher Gottfried Wilhelm Von Leibnitz developed it, which was an improvement over Pascaline. It was also called Leibnitz machine. It allowed users to add, subtract, multiply, and divide. It worked using a mechanism of a series of 10 slides.
3. Jaquard's loom (1801):- Joseph Jaquard devised a mechanical loom called Jaquard's loom and also developed a punched card as means of controlling the loom, which made weaving complex patterns a lot more easier. This device used instructions stored on a punched card to control the movement of threads.
4. Difference engine (1822):- English Mathematician Charles Babbage, Often called 'father of modern computer' , proposed a machine called difference engine to compile mathematical tables. It ran using steam and computed polynomials using difference method. It was't completed because of mechanical difficulties.



Jaquard's Loom


5. Analytical Engine (1832):- Charles Babbage also proposed another machine, analytical engine which had basic elements of a modern computer. It was operated using input,process and output method.

Punched Card Used In
Jaquard's Loom

Difference Engine

Electromechanical Calculating Devices (A link between mechanical and electronic devices):-

Harvard Mark I and Tabulating Machine are examples of these. We'll explore them next day.

...........................To be continued on March 27th 2016 (Due to technical reasons)

Fifth-Gen Computing : Are we at it? (Part 1)

Computer according to the technology used, are classified into generations. Each gen is better than the last. Let us take a quick sight into the computer generations.

Era Before Computers:-

• They were 'mechanical calculating devices' which were operated manually as well as semi-automatically.
• Manual devices consisted of Abacus and Napier's bones.
• Semi-Automatic Consisted of Pascaline, Staffelwalze, Jacqard's loom, difference engine and Analytical engine

Manual Calculating Devices:-

1. Abacus:- Abacus was traced back as back as 3500 B.C. It consisted of pitted board with beads or pebbles. The modern abacus originated in the 15th century China. It consisted of a rectangular frame carrying a number of rods or wires. The rods consisted of sliding beads to perform Calculations. It is used for simple calculations.
2. Napier's bones:- It was invented by Jhon Napier in 17th century. It is used for multiplication.

Abacus

Napier's Bones

Semi-Automatic Calculating Devices:-

1. Pascaline (Pascal's adding machine) (1642)

.......................To be continued next day

Bytes of The Day

An Abacus Versus Calculator contest was held at Tokyo in 1946. Abacus Won 4 to 1!!!!!! The only operation it lost was at multiplication. Another was held at Hongkong in 1967 and Abacus won again!!!!! No further took place.

But the modern calculators are likely to score over Abacus.

So, We are going to conduct one test!!!!! The results will be published tomorrow.

Bytes Of The Day?

What Is The Abbreviation of COMPUTER?

Commonly Operated Mechines Perticularly Used for Technology Education and Research.

C   - Commonly
O   - Operated
M  - Mechines
P    - Perticularly
U    - Used for
T     - Technology
E     - Education and
R     - Research

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