Have you ever thought why the numbers are written in different style in a phone and in a calculator? Why this pattern was followed? Why 7-8-9 on the top row of a calculator and 1-2-3 on the phone? Do you think there must be any reason behind it? Sounds interesting right? Read the following article to find your answer.
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#1 In The Early 1900s Us Invented The Rotary Telephone
The numbers on the telephone had holes from number 1 to 9 and then 0 after 9.
#2 Later, by the 60s the keypad phones were invented.
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#3 Before the push buttons were released.
There was research going on how to put the numbers in a way that there will be fewer chances of dialing errors.
#4 According to the psychology people dial the numbers in the order they normally read.
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#5 Later they realized there will be a lot of combination of arrangements for numbers.
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#6 But they chose the ones that the customer would expect.
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#7 According to a study in 1960s in Bells lab…
People liked the combination of two horizontal rows of buttons as it is the fastest way and also had fewer chances of errors while dialing.
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#8 The first calculator was made in Texas in 1967.
The buttons were inspired by the desktop adding machines that had order from 7-8-9 on the top row.
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#9 Since then people are using two patterns and are used to it now.
