Circuit, integrated

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OBJECT TYPE: STATIC RAM/9 PIN
DATE: 1970–1983
ARTIFACT NUMBER: 1999.0308.001

MANUFACTURER: Unknown
MODEL: P2111A-4
LOCATION: Unknown

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: METAL AND CERAMIC MATERIALS OF CONSTRUCTION.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 2.3 cm
Width: N/A
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Energy-electric
Category: Electricity & electronics
Sub-Category: N/A

Manufacturer

AKA: Unknown
Country: Unknown
State/Province: Unknown
City: Unknown

Context

Country: North America
State/Province: Unknown
Period: This type of IC made and presumably used in 1970s- early 1980s, and possibly later.
Canada: Part of a collection of early solid state devices assembled by the donor and his father during their careers as electronics technicians. (ref. 1)
Function: To retain data in memory permenantly as long as power is applied.
Technical: Examples of early static RAM chips, in which the transistor itself is a Flip/Flop switch, with one position meaning 1 and the other meaning 0. Each Flip/Flop requires several transisitors to operate, Which makes static RAM less dense and the cost per byte much higher than dynamic RAM. Static RAM also use much more power than dynamic RAM. They are, however, much quicker in terms of access speed. (ref. 3)
Area Notes: Unknown

Details

Markings: .1-.2 each case top marked "[logo]/ AM9111BPC/ P2111A-4 8204DPP".
Missing: None.
Finish: .1-.2 Dark brown/black cases; 9 silver metal pins.
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

Unknown Manufacturer, Circuit, integrated, circa 1970–1983, Artifact no. 1999.0308, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1999.0308.001/

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