BINAC, the Binary Automatic Computer, was an early electronic computer designed for Northrop Aircraft Company by the Eckert-Mauchly Computer Corporation in 1949. A computer is a Machine that manipulates data according to a list of instructions. The Northrop Corporation was a leading Aircraft manufacturer of the United States from its formation in 1939 until its merger with Grumman to form Northrop Grumman Year 1949 ( MCMXLIX) was a Common year starting on Saturday (link will display the full calendar of the Gregorian calendar. 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. EDVAC ( E lectronic D iscrete V ariable A utomatic C omputer) was one of the earliest electronic Computers BINAC was their first product, the first stored-program computer in the US, and the world's first commercial digital computer.
The BINAC was a bit-serial binary computer with two independent CPUs, each with its own 512- word acoustic mercury delay line memory. The binary numeral system, or base-2 number system, is a Numeral system that represents numeric values using two symbols usually 0 and 1. In Computing, " word " is a term for the natural unit of data used by a particular computer design Mercury (ˈmɜrkjʊri also called quicksilver or hydrargyrum, is a Chemical element with the symbol Hg ( Latinized hydrargyrum Genesis in radar The basic concept of the delay line originated with World War II Radar research as a system to reduce clutter from reflections from the ground Computer data storage, often called storage or memory, refers to Computer components devices and recording media that retain digital The CPUs continuously compared results to check for errors caused by hardware failures. It used approximately 700 vacuum tubes. This article is about the electronic device not an evacuated pipe used for experiments in Free-fall. 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. A bit is a binary digit, taking a value of either 0 or 1 Binary digits are a basic unit of Information storage and communication 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. The second ( SI symbol s) sometimes abbreviated sec, is the name of a unit of Time, and is the International System of Units New programs or data had to be entered manually in octal using an eight-key keypad. The octal Numeral system, or oct for short is the base -8 number system and uses the digits 0 to 7 BINAC was significant for being able to perform high-speed arithmetic on binary numbers, with no provisions to store characters or decimal digits. The decimal ( base ten or occasionally denary) Numeral system has ten as its base.
The BINAC ran a test program (consisting of 23 instructions) in March 1949, although it wasn't fully functional at the time. In Computer science, an instruction is a single operation of a processor defined by an Instruction set architecture. 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.
Northrop picked up BINAC in September 1949. Northrop employees said that BINAC never worked properly after it was delivered, although it worked at the Eckert-Mauchly workshop. It was able to run some small problems but didn't work well enough to be used as a production machine. The failures were attributed to it not being properly shipped when Northrop picked it up.
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