Hand-held Calculators

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"Standard Type 1" Calculators

By the mid 1970s the components for calculators were mass-produced and calculator had become very cheap. This model was one of the cheapest and was sold under many names. It was even given away as an advertising item.

Below are photographs of a few of the many versions of this "Standard Type 1" calculator.

King Sonic

"Standard Type 1"

Distinctive features: A popular, low-cost model, sold under many names.

Technical details:
Display is 8 digits, red LED.

Four function, %, memory.

Integrated circuit - Texas Instruments TMC0972 or TMS0972.

9v (PP3 battery).

69 x 133 x 24 mm (2.75" x 5.25" x 0.95").

Made in Hong Kong.

King Sonic - a typical "Standard Type 1" calculator.


Showing the electronics of this type of calculator. By now there is a just a cheap keyboard, the Texas Instruments TMS0972NL integrated circuit (here date coded to early 1978) and the 8-digit LED display array.

Some Varieties of "Standard Type 1" Calculator

Bohsei 3000 Bowmar Geeta 3000

Bohsei 3000
Photo courtesy of Gene Sederholm.

Bowmar (no model number).

Geeta 3000

Goodyear G191

Goodyear G191
A calculator advertising Goodyear tyres - by now calculators were cheap enough to be given away as promotional items.

Mustang 3000

Mustang 3000

Texet 800M

Texet 800M



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Hand-held Calculators

TI Cal-Tech
Canon Pocketronic
Sanyo ICC-0081 & ICC-82D
Sharp QT-8B
Busicom LE-120A & LE-120S
Sharp EL-8 & Facit 1111
Minolta Minolcom
Brother PRO-CAL 408
Walther ETR3
Bowmar 901B
Ragen Microelectronic
Compucorp 324G
Sharp EL-811 & derivatives
Royal Digital III & IV
Busicom LE-100A handy
Busicom LE-80A handy
Hewlett Packard HP-35
Canon LE-10
Rapidman 800
Texas Instruments 2500
Lloyd's Accumatic 100
Sinclair Executive
Casio Mini
Sanyo ICC-809
Sharp EL-801
Texas Instruments SR-10
Sperry Remington 661D & 661
Olympia CD 81
apf Mark V
Ramsgate M-11
Olivetti Divisumma 18
Iain Jones International Mini A
Hewlett-Packard HP80
Litronix Checkmate
Heathkit IC-2009
MITS 150
Summit Ko9V, K16 & SE88M
Unicom 102
Victor 85 "Tallymate"
Elka 101
RFT minirex 75
Sharp EL-120
Sharp EL-805
Bowmar MX-55
Atlas-Rand, Berkey, & Keystone
Hewlett-Packard HP-65
Casio fx-10
Casio AL-8 & family models
Commodore 776M & 796M
Novus 650 "Mathbox"
Rockwell 8R
General Instrument EZ3000
Check, billfold, wallet calculators
Monte Carlo
Texas Instruments Spirit of '76
Pulsar Calculator Watch
Compuchron Calculator Watch
Adler Lady & Sir
Elektronika B3-18A & C3-15
Commodore S61
"Standard Type 1"
Sharp EL-8026
Texas Instruments TI-30
Canon Multi 8
Casio ST1
Wrist Calculators
Kosmos I & Kosmos Astro
Hanimex Calculator-Recorder
Navigation Calculators
TI58 Special Function Calculators
Sandvik 842S Coromant
"Standard Type 2"
Panasonic Electronic Ruler
Teal Photon
Casio Mini Card LC-78
Feet & inches calculators
SCAT Specialist Calculators
Sharp EL-826
Sharp EL-825
Sanyo CX-1
Elektronika MK-33 etc
Sharp PC1211/Tandy TRS80 PC1
Slide Rule
Otis King L

Vintage Calculators

© Text & photographs copyright Nigel Tout   2000-2015 except where noted otherwise.