Telephone Keypad Design


Telephone Keypad Design

Why are the numbers on a telephone keypad arranged the way they are?

Read an interesting and insightful article on how and why the telephone keypad was designed the way it is today. Surprisingly its simple, these guys at Bell Labs actually did create multiple versions prototypes and tested with people. The outcome was to be seen in the phones coming further.


The answers to these questions can be found in a fascinating piece of research performed by AT&T in 1960. I strongly encourage you, if you have time, to read their entire publication on the subject. A summary of this work was published in the July 1960 edition of the Bell Systems Technical Journal.

The article was entitled: Human Factors Engineering Studies of the Design and Use of Pushbutton Telephone Sets. You can download a copy of the article here [PDF].

Visit below link to read detailed article.

Source: Telephone Keypad Design

The ROI of side projects – Crew blog

The ROI of Side Projects for a Startup

High Level Summary

  • The best marketing is when you don’t know it’s marketing
  • Giving someone something useful they can apply to their own lives has the biggest impact.
  • The tool must be small in size, with less updates.
  • FOR the Audience that you are targeting.

Where blog posts, infographics, and webinars were once marketing gold, websites, apps, and tools are taking over.



Read More at : The ROI of side projects – Crew blog

Hybrid fixed wing drone goes at speeds of up to 100 kph


X PlusOne The Hybrid Fixed wing drone has come up with some Simple innovation to make Drones more and more faster.


I think the inspiration has come from Bell Boeing V-22 Osprey. But instead of having a tiltrotor here, we have the alternating speeds of brushless motors to tilt the drone 90 Degrees and effectively put in a flight position.











They are on Kickstarter trying to raise funds and have managed to reach 86% funding till now.


My only concern is, how can these be used for commercial purposes like, transporting stuff Or mounting cameras for shooting ?

Something that the team should think about.

Kickstarter Campaign Link:

Band Aid of the Future