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An optical quantum computer with three qubits calculates the energy spectrum of molecular hydrogen to high precision. [156] The first germanium laser advances the state of optical computers. [157] A single-electron qubit is developed [158] The quantum state in a macroscopic object is reported. [159] A new quantum computer cooling method is ...
The A-0 high-level compiler is invented by Grace Murray Hopper. April 1952: US IBM introduces the IBM 701, the first computer in its 700 and 7000 series of large scale machines with varied scientific and commercial architectures, but common electronics and peripherals. Some computers in this series remained in service until the 1980s.
The first digital electronic computer was developed in the period April 1936 - June 1939, in the IBM Patent Department, Endicott, New York by Arthur Halsey Dickinson. [35] [36] [37] In this computer IBM introduced, a calculating device with a keyboard, processor and electronic output (display). The competitor to IBM was the digital electronic ...
This machine invented the principle of the modern computer and was the birthplace of the stored program concept that almost all modern day computers use. [52] These hypothetical machines were designed to formally determine, mathematically, what can be computed, taking into account limitations on computing ability.
For example, the 1961 Semiconductor Network Computer (Molecular Electronic Computer, Mol-E-Com), [10] [11] [12] the first monolithic integrated circuit [13] [14] [15] general purpose computer (built for demonstration purposes, programmed to simulate a desk calculator) was built by Texas Instruments for the US Air Force.
Nitrogen is a chemical element; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System.
On 29 March 1883 Wróblewski and Olszewski used a new method of condensing oxygen, and on 13 April the same year—nitrogen. [4] Karol Olszewski continued the experiments, using an improved Pictet cascade apparatus, and carbon dioxide, boiling ethylene in vacuum, and boiling nitrogen and boiling air as cooling agents. He died on 16 April 1888.
As Microsoft did not have an operating system to sell, they bought Seattle Computer Product's 86-DOS which had been written by Tim Paterson earlier that year (86-DOS was also known as QDOS, Quick & Dirty Operating System; it was a more-or-less 16 bit version of CP/M). The rights were actually bought in July 1981.