Early
Electronic
Calculator		 Wang 320K Calculator

Manufacturer: Wang
Model: 320K
Year: 1970
Form: Desktop
Functions: Basic four, square root, square, log(e) x, e^x, accumulators.
Number of Digits: 10
Display Type: NIX
Display:Wang 340-0004
Display:Wang 340-0005
Display:National Electronics NL-840
Display:National Electronics NL-843
Logic Technology: DIS
Memory Technology: ?
Diodes: ?
Transistors: ?
Tech. Data Level: 2
Tech. Data Source: RE
Tech. Data Pages: 3
Tech. Data:Schematic (pdf)

Sadly, only the keyboard/display units and no logic unit.

- Unit Log -

Serial Number: 201034
Year of Manufacture: 1970 (Display board stamped with Sep 30 1970, nixie tubes stamped with 7019, microswitches with 6833, RCA transistors with 9A, 0H, 0F, bottom plate with 12/10/69)
Date of Receipt: 24 Jun 2001
Source: UBC SERF via Jurgen.
State upon Receipt: Good physical condition. Missing the external logic unit.
Current State: Needs external logic unit (24 Jun 2001).

Date: 27 Jun 2001
Procedure: Cleaned, rubber feet replaced.

Date: 23 Aug 2001
Symptoms: Numeral 0 faintly on in all non-blanked digits.
Analysis: Numeral 0 driver transistor leaky (CE measures ~120K).
Solution: Transistor replaced with MPSA06.

- Unit Log -

Serial Number: 201062
Year of Manufacture: 1969 (Nixie tubes stamped with 6718 to 6916)
Date of Receipt: 24 Jun 2001
Source: UBC SERF via Jurgen.
State upon Receipt: Excellent physical condition. Missing the external logic unit.
Current State: Needs external logic unit (24 Jun 2001).

Date: 14 Jul 2001
Procedure: Cleaned, rubber feet replaced.

Date: 05 Aug 2001
Symptoms: Numeral 1 always on.
Analysis: CE short in driver transistor.
Solution: Transistor replaced.


  Wang 320K
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EEC 		bhilpert