In 1957 IBM, the company in the U.S., released the first commercial relatively "compact" calculator.Later the first all-electronic desktop calculator ANITA was produced. There followed a series of electronic calculator models from these and other manufacturers. The Olivetti Programma 101 was introduced in late 1965; it was a stored program machine which could read and write magnetic cards and displayed results on its built-in printer. It is regarded as the first personal computer. The first handheld calculator was developed by Texas Instruments in 1967. It could add, multiply, subtract, and divide, and its output device was a paper tape. The electronic calculators of the mid-1960s were large and heavy desktop machines due to their use of hundreds of transistors on several circuit boards with a large power consumption that required an AC power supply. By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries.
In 1957 IBM, the company in the U.S., released the first commercial relatively "compact" calculator.Later the first all-electronic desktop calculator ANITA was produced.
ОтветитьУдалитьThere followed a series of electronic calculator models from these and other manufacturers.
The Olivetti Programma 101 was introduced in late 1965; it was a stored program machine which could read and write magnetic cards and displayed results on its built-in printer. It is regarded as the first personal computer.
The first handheld calculator was developed by Texas Instruments in 1967. It could add, multiply, subtract, and divide, and its output device was a paper tape.
The electronic calculators of the mid-1960s were large and heavy desktop machines due to their use of hundreds of transistors on several circuit boards with a large power consumption that required an AC power supply. By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries.