DATAMATH CALCULATOR MUSEUM
NSC Novus Electronics NS103A Data Checker
|Date of introduction:||1981||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 2.8" x 6.0" x 0.30"
71 x 153 x 8 mm3
|Weight:||2.8 ounces, 79 grams||Serial No:|
|Batteries:||2*LR44||Date of manufacture:||mth 02 year 1982|
|AC-Adapter:||Origin of manufacture:||Taiwan|
|Precision:||8||Integrated circuits:||NEC uPD1833G|
|Program steps:||Courtesy of:||Alex Balasa|
|Download manual:||(US: 2.0 MByte)|
National Semiconductor entered the market of Checkbook Calculators with the NS103 Data Checker in May 1978. It features Account Manager functionality with three permanent (till you remove the batteries) Memories and started a very successful product line. We discovered as of now seven different family members:
|• 1978: National Semiconductor NS103, 3 Memories
• 1979: National Semiconductor NS107, 2+1 Memories, Credit card size
• 1980: National Semiconductor NS103A, 3 Memories
• 1981: This NSC Novus Electronics NS103A, 3 Memories
• 1981: NSC Novus Electronics NS101A, 1 Memory
• 1982: NSC Novus Electronics NS101A, 1 Memory, Gold
• 1982: NSC Novus Electronics NS100A, 1 Memory, Credit card size
Dismantling the featured NSC Novus Electronics NS103A Data Checker manufactured in February 1982 in Taiwan reveals a clean design centered around a NEC uPD1833G single-chip calculator circuit soldered on a single-sided printed circuit board (PCB) and powered by two small LR44 batteries.
Please notice the changes of the
Brand Identity of the Data Checker product
line over time.
Inspecting the PCB of this LC 224CK manufactured in September 1983 brought our attention to a small mark reading NS_103B 1, most likely a reference to Type 103, and Revision B 1 of the design (schematics and layout).
Please find an overview of the
PCB-Marks we discovered
so far on Account Manager calculators.
Learn more about single-chip calculator circuits used in Account Manager Calculators.
Don't miss the Corvus CheckMaster introduced by Mostek already in 1975. This rare product retains the balance of your memory even when shut off but uses power-hungry electronics.
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© Joerg Woerner, March 2, 2020. No reprints without written permission.