Clock Calculator – Gadgets of our childhood




Clock Calculator – Gadgets of our childhood (7 photos)

Modern portable electronic devices may well compete in performance with home computers, and not so long ago there was a time when the calculator wristwatch caused admiration and envy of her classmates. The first clock calculator appeared in the early 80s of the last century and immediately became popular, and now they can be seen only in a museum.
The very first such device is considered Time Calculator 901 of Pulsar / Hamilton Watch. He had a numeric keypad and function keys on the sides, which allows basic arithmetic operations. Next model, Time Calculator 902, got the opportunity of calculating interest, and the first batch of 100 pieces were made of gold and cost $ 4000. Today they can be purchased for about $ 27,000 U.S. dollars.

Then, the company entered the market with their Casio CA-50 having 16 buttons, each of which carried a 3 functions.

Часы-калькулятор – гаджеты нашего детства (7 фото)

Further development led to an increase in the number of functions with a corresponding increase in the number of buttons. Pulsar Y739 – a vivid example. Click on each of the 28 proposed pen buttons, and price of the device was relatively low and amounted to $ 105.

Часы-калькулятор – гаджеты нашего детства (7 фото)

Even hardware vendors have attempted to gain a foothold in this market. Hewlett Packard unveiled its HP-01 with a red light display and a similar 28-keypad.

Часы-калькулятор – гаджеты нашего детства (7 фото)

Most unusual model can recognize Citizen 9140A, whiling away received 41 button located around the dial. These watches are allowed to consider the roots of various degrees, sines, cosines, and tangents and logarithms. Even more unique about this model gives circulation, limited only a few hundred pieces.

Часы-калькулятор – гаджеты нашего детства (7 фото)

Then came the mobile phones, which have as their own clocks, calculators and so demand “wristwatch calculators” and slept their production almost ceased. Nevertheless, the trend of increasing the size of today’s smartphones forced engineers to revisit the idea of ​​smart watches and can say that they began the second phase of evolution.

smart watches , clock , calculator

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