The RAYDAC (for Raytheon Digital Automatic Computer) was a one-of-a-kind computer built by Raytheon. Raytheon Company ( is a major American Defense contractor and industrial corporation with core Manufacturing concentrations in Defense systems It was started in 1949 and finished in 1953. It was installed at the Naval Air Missile Test Center at Point Mugu, California. Point Mugu (məˈɡuː California is an Unincorporated area and geographical Promontory on the Pacific coast in Ventura County,
The RAYDAC used 5,200 vacuum tubes and 18,000 crystal diodes. This article is about the electronic device not an evacuated pipe used for experiments in Free-fall. Dioden2jpg|thumb|right|150px|Figure 2 Various semiconductor diodes It had 1,152 words of memory (thirty-six bits per word), using delay line memory, with an access time of up to 305 microseconds. In Computing, " word " is a term for the natural unit of data used by a particular computer design 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 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 To help compare Orders of magnitude of different Times this page lists times between 10&minus6 seconds and 10&minus5 seconds (1 micro Its addition time was 38 microseconds, multiplication time was 240 microseconds, and division time was 375 microseconds. (These times exclude the memory access time. )
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