## What did John Napier study?

Napier devoted most of his leisure to the study of mathematics, particularly to devising methods of facilitating computation, and it is with the greatest of these, logarithms, that his name is associated. Logarithms were meant to simplify calculations, especially multiplication, such as those needed in astronomy.

Edinburgh

A

## Where did John Napier die?

Merchiston Tower, Edinburgh, United Kingdom

Logarithm

## How is John Napier?

John Napier is best known as the discoverer of logarithms. Napier’s birthplace, Merchiston Tower in Edinburgh, is now part of the facilities of Edinburgh Napier University. Napier died from the effects of gout at home at Merchiston Castle and his remains were buried in the kirkyard of St Giles.

Multiplication

## What do you mean by Napier bones?

Napier’s bones is a manually-operated calculating device created by John Napier of Merchiston, Scotland for the calculation of products and quotients of numbers. The method was based on lattice multiplication, and also called ‘rabdology’, a word invented by Napier.

## How do you calculate Napier bones?

We can use Napier’s bones to multiply any two numbers. E.g. For 75 × 3, place the multiplier, the ‘7’ and the ‘5’ bone side by side (for 75) as shown below. To use the above Napier’s bones to calculate 3 × 75, sum the numbers along the slanted diagonals of the combined bones using the row applying to the multiplier.

ten rods

## How was Napier’s bones better than abacus?

‘Abacus’ can help in ‘building up better and faster calculation skills’. It takes ‘too long to calculate’ and ‘hard to learn’. ‘Napier’s bones’ is used to do ‘addition, multiplication, subtraction, and division’ in an efficient way. Napier’s bones requires manual accounting for carries.

Charles Babbage

## Who is the real father of computer?

Charles Babbage KH FRS (/ˈbæbɪdʒ/; 26 December 1791 – 18 October 1871) was an English polymath. A mathematician, philosopher, inventor and mechanical engineer, Babbage originated the concept of a digital programmable computer. Babbage is considered by some to be “father of the computer”.

ENIAC computing

ENIAC machine

Alan Kay

## Which laptop is best?

Best Laptops 2021

1. MacBook Air (late 2020) The best laptop of 2021.
2. HP Spectre x360 14. The best Windows laptop.
3. LG Gram 17 (2021) The best laptop in 2021 for big-screen fans.
4. HP Envy x360 (2020) The best budget laptop in 2021.
5. MacBook Pro 13 (late 2020)
6. Dell XPS 13 2-in-1.
7. Dell XPS 13 (late 2020)
8. Asus ROG Zephyrus G15.

## What is the best laptop brand?

1. Apple MacBook Air (M1 2020) The best laptop of 2021.
2. Microsoft Surface Laptop 4. The best Windows laptop.
3. Dell XPS 15 (2020) The best laptop in 2021 for productivity.
4. HP Spectre x360 (2021) This year’s model is a brilliant 13-inch laptop.
5. Dell XPS 13 (Late 2020)
6. LG Gram 17 (2021)
7. Acer Swift 3.
8. MacBook Pro (16-inch, 2019)

## Who invented laptop and which country?

The first contender for true laptop computing was the 16-bit Dulmont Magnum, designed by David Irwin and John Blair of Dulmison, Australia, in 1982 and released in Australia in September 1983 by Dulmont. This battery-powered device included an 80 character × 8 line display in a lid that closed against the keyboard.