Information about Binac
BINAC, the Binary Automatic Computer, was an early electronic computer designed for Northrop Aircraft Company by the Eckert-Mauchly Computer Corporation in 1949. Eckert and Mauchly, though they had started the design of EDVAC at the University of Pennsylvania, choose to leave and start EMCC, the first computer company. BINAC was their first product and the first stored-program computer in the US.
The BINAC was a bit-serial binary computer with two independent CPUs, each with its own 512- word acoustic mercury delay line memory. The CPUs continuously compared results to check for errors caused by hardware failures. It used approximately 700 vacuum tubes. The 512-word acoustic mercury delay line memories were divided into 16 channels each holding 32 words of 31 bits, with an additional 11-bit space between words to allow for circuit delays in switching. The clock rate was 4.25 MHz (1 MHz according to one source) which yielded a word time of about 10 microseconds. The addition time was 800 microseconds and the multiplication time was 1200 microseconds. New programs or data had to be entered manually in octal using an eight-key keypad. BINAC was significant for being able to perform high-speed arithmetic on binary numbers, with no provisions to store characters or decimal digits.
The BINAC ran a test program (consisting of 23 instructions) in March 1949, although it wasn't fully functional at the time. Here are early test programs that BINAC ran:
The BINAC was a bit-serial binary computer with two independent CPUs, each with its own 512- word acoustic mercury delay line memory. The CPUs continuously compared results to check for errors caused by hardware failures. It used approximately 700 vacuum tubes. The 512-word acoustic mercury delay line memories were divided into 16 channels each holding 32 words of 31 bits, with an additional 11-bit space between words to allow for circuit delays in switching. The clock rate was 4.25 MHz (1 MHz according to one source) which yielded a word time of about 10 microseconds. The addition time was 800 microseconds and the multiplication time was 1200 microseconds. New programs or data had to be entered manually in octal using an eight-key keypad. BINAC was significant for being able to perform high-speed arithmetic on binary numbers, with no provisions to store characters or decimal digits.
The BINAC ran a test program (consisting of 23 instructions) in March 1949, although it wasn't fully functional at the time. Here are early test programs that BINAC ran:
- February 7, 1949 - Ran a five-line program to fill the memory from register A.
- February 10, 1949 - Ran a five-line program to check memory.
- February 16, 1949 - Ran a six-line program to fill memory.
- March 7, 1949 - Ran 217 iterations of a 23-line program to compute squares. It was still running correctly when it stopped.
- April 4, 1949 - Ran a fifty-line program to fill memory and check all instructions. It ran for 2.5 hours before encountering an error. Shortly after that it ran for 31.5 hours without error.
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computer is a machine which manipulates data according to a list of instructions.
Computers take numerous physical forms. The first devices that resemble modern computers date to the mid-20th century (around 1940 - 1941), although the computer concept and various machines
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Computers take numerous physical forms. The first devices that resemble modern computers date to the mid-20th century (around 1940 - 1941), although the computer concept and various machines
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Northrop Corporation was a leading aircraft manufacturer of the United States.
Jack Northrop founded three companies using his name. The first was the Avion Corporation
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Jack Northrop founded three companies using his name. The first was the Avion Corporation
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The Eckert-Mauchly Computer Corporation (EMCC) (March 1946-1950) was founded by J. Presper Eckert and John Mauchly, and was incorporated on December 22 1947. Eckert and Mauchly had built the ENIAC computer at the University of Pennsylvania, and formed EMCC to build similar
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19th century - 20th century - 21st century
1910s 1920s 1930s - 1940s - 1950s 1960s 1970s
1946 1947 1948 - 1949 - 1950 1951 1952
Year 1949 (MCMXLIX
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1910s 1920s 1930s - 1940s - 1950s 1960s 1970s
1946 1947 1948 - 1949 - 1950 1951 1952
Year 1949 (MCMXLIX
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EDVAC (Electronic Discrete Variable Automatic Computer) was one of the earliest electronic computers. Unlike its predecessor the ENIAC, it was binary rather than decimal, and was a stored program machine.
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binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. More specifically, the usual base-2 system is a positional notation with a radix of 2.
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central processing unit (CPU), or sometimes simply processor, is the component in a digital computer capable of executing a program.(Knott 1974) It interprets computer program instructions and processes data.
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word" is a term for the natural unit of data used by a particular computer design. A word is simply a fixed-sized group of bits that are handled together by the machine. The number of bits in a word (the word size or word length
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Delay line memory was a form of computer memory used on some of the earliest digital computers. Like many modern forms of electronic computer memory, delay line memory was a refreshable memory, but as opposed to modern random access memory, delay line memory was serial
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Computer data storage, computer memory, and often casually storage or memory refer to computer components, devices and recording media that retain digital data used for computing for some interval of time.
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vacuum tube, electron tube (inside North America), thermionic valve, or just valve (elsewhere); is a device used to amplify, switch, otherwise modify, or create an electrical signal by controlling the movement of electrons in a low-pressure space, often not
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BIT is an acronym for:
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- Bannari amman Institute of Technology
- Bangalore Institute of Technology
- Beijing Institute of Technology
- Benzisothiazolinone
- Bilateral Investment Treaty
- Bhilai Institute of Technology - Durg
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second (SI symbol: s), sometimes abbreviated sec., is the name of a unit of time, and is the International System of Units (SI) base unit of time.
SI prefixes are frequently combined with the word second to denote subdivisions of the second, e.g.
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SI prefixes are frequently combined with the word second to denote subdivisions of the second, e.g.
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octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7.
Octal numerals can be made from binary numerals by grouping consecutive digits into groups of three (starting from the right).
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Octal numerals can be made from binary numerals by grouping consecutive digits into groups of three (starting from the right).
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decimal (base ten or occasionally denary) numeral system has ten as its base. It is the most widely used numeral system, perhaps because humans have four fingers and a thumb on each hand, giving a total of ten digits over both hands.
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instruction is a single operation of a processor defined by an instruction set architecture. In a broader sense, an "instruction" may be any representation of an element of an executable program, such as a bytecode.
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