UDM - See Universal Data Machine.

UIT

UIT 85X. Featured calculator.

UIT 22SP Euro market, resembles Sinclair designs, no other information, please email if you have any information on the company.

Unico (Euro market ?)

Unico P-805. Details.

Unico R-846 made in Singapore.

Unicom (USA company, bought out by Rockwell c.1972)

Unicom 102. Featured calculator.

Unicom 103.

Unicom 104+, inside.

Unicom 201

Unicom 801. Oct 11.

Unifive Industries Corporation (U.S.A. manufacturer)

Unifive 301 aka "Data Brain II" (similar to Calfax Data Brain II).

Unifive 301 aka "Magic Slate".

UniMark (U.S.A. marketer)

UniMark 805T. Details.

Union Carbide (U.S. chemical company)

Union Carbide (probably a promotional item). Details.

Unisonic (Note: many Unisonic models have a number on the front (840) and a variation number on the back (840-C). Often there was a difference in the features or keys of the model from another variation of the same basic model number.)

Unisonic, no model # shown, if you have info on model #, please email.

Unisonic 21 "Blackjack", blackjack game. Oct 11.

Unisonic 676. Details.

Unisonic 711.

Unisonic "Slide Rulette" 738

Unisonic 740 ("740-B" on back).

Unisonic 811.

Unisonic 737. Oct 11.

Unisonic 790RM. Oct 11.

Unisonic 840 ("840-C" on back).

Unisonic 890 ("890-A" on back).

Unisonic 911L. Oct 11.

Unisonic 931-B. Sep 11.

Unisonic 940.

Unisonic 1299R. Oct 11.

Unisonic 1511L. Oct 11.

Unisonic 1542L. Oct 11.

Unisonic CB-14. Oct 11.

Unisonic Mini. Details.

Unisonic "Slide Rulette" 888

Unitra Eltra (Polish company)

Unitra Eltra BRDA 10U. Details.

Unitra Eltra BRDA 11U, inside. Details.

Unitra Eltra BRDA 12U, inside. Details.

Unitra Eltra K-741. Details.

Unitra Eltra K-741M. Details.

Unitra Eltra K-765M. Details.

Unitrex

Unitrex 80KF

Unitrex 95SL

Unitrex 801MR (with malfunctioning display).

Unitrex 901R. Nov 11.

Unitrex 902AS. Nov 11.

Unitrex 902RM

Unitrex Mini Calculator. Nov 11.

Universal (Euro-market)

Universal 101

Universal Data Machine (UDM) (USA company)

Universal Data Machine (UDM) 9V9. Oct 11.

Universal Data Machine (UDM) TKB001, photo2, inside,  made in USA, very early (1971-72).

Universal Data Machines TKB 0001 and TKB 02

Unknown manufacturer/distributor (If you can provide any information about these please contact us).

Unknown 2, Child's Teaching Speaking Calculator. Featured calculator.

Unknown 3, tiny calculator, inside. Featured calculator .

Unknown 4, tiny scientific calculator, inside. This appears to be a partly assembled kit calculator with some components missing, including keys. Featured calculator.

TC-8M. Details.