Tom and Johann

Read my post on computers

Tom and Jerry might look simple, but the content of the episodes is based on actual knowledge. 

In the episode ‘Johann mouse’, Tom was playing the all famous ‘The Blue Danube Waltz – J. Strauss” while Jerry was dancing. This entertained people so they continued doing it.

The name of the piece might be unknown to you but the melody surely isn’t.

It is featured in movies like the Titanic

What is it exactly?

Waltz: a dance in the rhythm of three

We are used to fours in our new commercial music.

What should I know about it?

Despite being one of the most widely used and known compositions of all time, the first performance wasn’t the biggest success. Strauss blames it on the coda ‘my only regret is for the coda’ – J. Strauss

Coda: ending of a piece

Johann Strauss

He was an Austrian composer born in 1825.

He composed over 500 waltzes, polkas, quadrilles, and other types of dance music.

Polka: Czech dance and genre of dance music familiar throughout Europe and the Americas.
Quadrille: dance fashionable in late 18th and 19th-century Europe and its colonies.

He physically died in 1899 but his work is still alive as long as we use his compositions.

Johann Strauss isn’t mortal yet.

BONUS: Space Odyssey 






We got so far into this!

‘harness the power of computing and digital technologies for work’

From Raspberry Pi official site.

But what do they mean by ‘power of computing and digital technologies’?

Raspberry pi


‘The Raspberry Pi is a series of small single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote teaching of basic computer science in schools and in developing countries. The original model became far more popular than anticipated, selling outside its target market for uses such as robotics. It does not include peripherals (such as keyboards and mice) and cases. However, some accessories have been included in several official and unofficial bundles.

Other words

Designed for educational purposes but the uses are broader.

The latest model is Raspberry pi 3

Raspberry pi 3 specs

SoC: Broadcom BCM2837

CPU: 4× ARM Cortex-A53, 1.2GHz

GPU: Broadcom VideoCore IV

RAM: 1GB LPDDR2 (900 MHz)

Networking: 10/100 Ethernet, 2.4GHz 802.11n wireless

Bluetooth: Bluetooth 4.1 Classic, Bluetooth Low Energy

Storage: microSD

GPIO: 40-pin header, populated

Ports: HDMI, 3.5mm analogue audio-video jack, 4× USB 2.0, Ethernet, Camera Serial Interface (CSI), Display Serial Interface (DSI)

Lets focus on two specs

RAM: 1GB LPDDR2 (900 MHz)

This means that the RAM has 48 billion transistors.

Storage: microSD

The microSD can have different capacities.

Let’s look for the largest.  

terms: micro sd capacity maximum


💵 : $323.91

the price is too high 


💵 : $49.18

Better price

It has 256 billion transistors.

Such a system has 256+48=304 trillion transistors – that’s 1 and 9 zeros following it!!

This is a picture of a Raspi3.
It’s smaller than a credit card – that’s what they say.


A little history on computer hardware

Other words: how is Moore not mortal yet ??

Moore’s law

In 1965 Intel co-founder Gordon Moore observed that the number of transistors on a chip doubles every year and the cost is cut down  by half.

This trend continued and this trend continued until today. With one difference: every 18 months now instwad of 24!

Many experts believe Moore’s Law hit its physical and economical limitations in 2017 and has slowed.

Fear not!

Quantum computing will solve the physical problem.

Moore’s Law