Plustronics Calculators




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	*Plustron*

	Plustronics Ltd., of Newcastle-under-Lyme, Staffordshire, was a company of Photopia International Ltd., which was a British photographic goods importer and distributor. Known Plustronics models: Plustron 108 Plustron 308 Plustron 508 Plustron 608 Plustronic 636 Plustron 808 Plustron 908 Plustron Educational 1 Plustron fleximind Plustronic LE-806 Plustronics was also the distributor in Britain of Kovac calculators.

	Plustron 108

Plustron 108

6v (4 x AA batteries).

Display is 8 digits, red LED.

4 functions.

82 mm x 165 mm x 37 mm (3.25" x 6.5" x 1.5").

Was originally purchased in 1974.

Made in Singapore.


	Plustron 308

Plustron 308

9v (PP3 battery).

Display is 8 digits, red LED.

4 functions.

71 mm x 108 mm x 23 mm (2.8" x 4.25" x 0.9").

Was originally purchased in 1974.

Made in Singapore.


		Plustron 508




		Plustron 508 9v (PP3 battery). Display is 8 digits, red LED. 4 functions, %. 71 mm x 108 mm x 23 mm (2.8" x 4.25" x 0.9"). Made in Singapore.

		Plustron 608

Plustron 608

9v (PP3 battery).

Display is 8 digits, red LED.

4 functions.

72 x 135 x 22 mm (2.8" x 5.3" x 0.9").

Made in Singapore.


	Plustronic 636



	Plustronic 636 4.5v (3x AA batteries). Display is 6 digits, red LED. 4 functions. Calculator chip - Mostek MK5021P, here date coded 1973. Note also the 22 transistors (black blobs) on the circuit board and the 6-digit LED display. 77 x 143 x 40 mm (3.0" x 5.6" x 1.6"). Made in Malaysia.

	Plustron 808

Plustron 808

9v (PP3 battery).

Display is 8 digits, red LED.

4 functions.

72 x 135 x 22 mm (2.8" x 5.3" x 0.9").

Made in Singapore.


	Plustron 908

Plustron 908

9v (PP3 battery).

Display is 8 digits, red LED.

4 functions, %, memory.

72 x 135 x 22 mm (2.8" x 5.3" x 0.9").

Made in Singapore.


	Plustron Educational 1

Plustron Educational 1

3v (2 AA batteries).

Display is green VFD (vacuum fluorescent).

4 function calculator, poses mathemtical problems.
In calculator mode it can only operate on 2-digit numbers without decimal points, and can give a 4-digit result with decimal point. It displays the full calculation as shown in the photograph on the left.

73 x 134 x 22 mm (2.9" x 5.3" x 0.9").

Made in Taiwan.


	Plustron fleximind

In calculator mode.

In game mode (similar to Mastermind where you have to guess a string of numbers and are given clues to how well you are doing).


	Plustron fleximind 9v (PP3 battery). Display is 8 digits, green Vacuum Fluorescent Display (VFD). 4 functions, %, "Mastermind"-type game. 78 x 142 x 19 mm (3.1" x 5.6" x 0.75").

		Plustronic LE-806