The 1103 is a

dynamic random-access memory Dynamic random-access memory (dynamic RAM or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell, usually consisting of a tiny capacitor and a transistor, both typically based on metal-oxi ...

(DRAM) integrated circuit (IC) developed and fabricated by

Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the devel ...

. Introduced in October 1970, the 1103 was the first commercially available DRAM IC; and due to its small physical size and low price relative to

magnetic-core memory Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about 1955 and 1975. Such memory is often just called core memory, or, informally, core. Core memory uses toroids (rings) of a hard magneti ...

, it replaced the latter in many applications. When it was introduced in 1970, initial production yields were poor, and it was not until the fifth stepping of the production masks that it became available in large quantities during 1971.

Development

In 1969 William Regitz and his colleagues at

Honeywell Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building technologies, performance ma ...

invented a three-

transistor upright=1.4, gate (G), body (B), source (S) and drain (D) terminals. The gate is separated from the body by an insulating layer (pink). A transistor is a semiconductor device used to Electronic amplifier, amplify or electronic switch, switch ...

dynamic memory cell and began to canvass the semiconductor industry for a producer. The recently founded

Corporation responded and developed two very similar 1024-bit chips, the 1102 and 1103, under the lead of Joel Karp, working closely with William Regitz.Computer History Museum: "Oral History of Joel Karp" Interviewed by Gardner Hendrie
March 3, 2003 , Atherton, California Ultimately only the 1103 went into production.

Microsystems International Microsystems International Limited (MIL) was a telecommunications microelectronics company based in Ottawa, Ontario, Canada, founded in 1969. MIL was an early attempt to create a merchant semiconductor house by Nortel Networks (then Northern Elect ...

became the first second source for the 1103 in 1971. Later

National Semiconductor National Semiconductor was an American semiconductor manufacturer which specialized in analog devices and subsystems, formerly with headquarters in Santa Clara, California. The company produced power management integrated circuits, display dr ...

Signetics Signetics Corporation was an American electronics manufacturer specifically established to make integrated circuits. Founded in 1961, they went on to develop a number of early microprocessors and support chips, as well as the widely used 555 tim ...

, and

Synertek Synertek, Inc. was an American semiconductor manufacturer founded in 1973. The initial staff consisted of Bob Schreiner (the CEO), Dan Floyd, Jack Balletto, and Gunnar Wetlesen and Zvi Grinfas. Schreiner, Floyd, Balletto and Wetlesen were all forme ...

manufactured the 1103 as well.

Technical details

References

1103 Year 1103 ( MCIII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. Events By place Levant * Spring – Bohemond I, Norman prince of Antioch, is released from Seljuk imprison ...

Computer-related introductions in 1970 Computer memory {{engineering-stub