Early
Electronic
Calculator
Pocket Calculator Units: Source & Status

Manufacturer
Model
Serial Number
Year of Manufacture Date of Receipt State upon Receipt Current State
Casio
?CM607?

(unknown)
1974 (other web site info) 1970s Functional. (Case and keyboard discarded.)
Hewlett-Packard
21

1607S20660
1976 (ICs and caps stamped with 7605,7614) 1976 Brand new. Fully functional (12 Jun 2000).
Casio
SL-760

5P110A
1985 Nov 1985 Brand new. Non-functional (broken internal connection) (2000).
Casio
TH-10 "Crystal Cal"

5D406A
1985 Nov 1985 Brand new. Fully functional (Nov 1985).
Hermes
805

?
1940s? 1990s Fair physical condition. Functional. Fully functional (2013 Jan).
Hermes
805

?
1940s? 1990s Fair physical condition. Functional. Fully functional (2013 Jan).
Rockwell
8R

408873
1975 (IC stamped with 7546) 2000 Brand new in box, except it's old. Fully functional (2000).
apf
Mark 40

M-165620
1975 (IC stamped with 7538, display stamped with 7536) 29 Apr 2000 Excellent physical condition. Appears to be NIB or rarely used. Fully functional. Fully functional (29 Apr 2000).
apf
Mark 40

M-0326843
1975 (MK50282 IC stamped with 7551, T1347 with 5·I) 19 Jun 2001 Excellent physical condition. Fully functional. Fully functional (21 Jun 2001).
Microlith
Memory 4 / 113G

(not specified)
1976 (IC stamped with 7615.) 13 Mar 2001 Good physical condition. Slightly bouncy/intermittent keyboard, otherwise fully functional. Marked with 702... SIN. Fully functional (13 Mar 2001).
Microlith
Memory 4 / 113G

(not specified)
1976 (IC stamped with 7615.) 02 May 2001 Good physical condition. Missing front 2 tiny rubber feet. Non-functional. Fully functional (15 Mar 2002).
Texas Instruments
TI-1025

(not specified)
1979 (IC stamped with 7940, plastic bottom stamped with 45 79.) 21 Apr 2001 Good physical condition. Fully functional. Fully functional (24 Apr 2001).
Texas Instruments
TI-30

3087665
1981 (IC stamped with 8048, plastic bottom stamped with ATA 2181.) 21 Apr 2001 Good physical condition. Fully functional. ?
XONEX
ELSI III / DATAEXAC

13343
1973 (IC stamped with 7332.) 21 Apr 2001 Good physical condition. Fully functional, with manual. Fully functional (24 Apr 2001).
AGS
14

5710342
1975 (Capacitor stamped with 7519, display with 5F.) 29 Apr 2001 Good physical condition. Fully functional. Fully functional (01 May 2001).
Hewlett-Packard
38C

2124S31271
1981 (serial number 21xx.) 02 May 2001 Good physical condition. Minor corrosion around battery contacts. Fully functional. Fully functional if batteries present (26 May 2001).
Hewlett-Packard
38C

2021S31302
1980 (serial number 20xx.) 03 Aug 2014 Good physical condition. Fully functional. Fully functional (03 Aug 2014). Battery compartment door moved to HP34C.
Texas Instruments
TI-57

3578622
1977 (IC stamped with 7745, plastic bottom stamped with LTA 0178.) 02 May 2001 Good physical condition. Not functional. ?
Sharp
EL-8131

88105287
1978 (Capacitor stamped with 7806, IC with 8F.) 02 May 2001 Good physical condition. Fully functional. Fully functional (07 May 2001).
Texas Instruments
TI-2550

618408
1975 (TMS0601 IC stamped with 7536.) 02 May 2001 Good physical condition. Segment 'a' of digit 6 does not work. Minor corrosion on battery terminals. This unit uses 75494 digit driver ICs also stamped with 27914. The 75493 segment drivers are absent. Fully functional except for segment a of digit 6 (03 May 2001).
Texas Instruments
TI-2550

365091
1975 (TMS0601 IC stamped with 7505.) 13 May 2001 Good physical condition. Segment b of digit 8 (MSD) does not work. Minor corrosion on battery terminals. Fully functional except for segment b of digit 8 (16 Mar 2002).
Casio
Personal-8

4109659
1975 (IC stamped with 5A.) 02 May 2001 Good physical condition. Fully functional. Fully functional (05 May 2001).
apf
Mark 51

J-104455
1975 (IC stamped with 7552, keyboard stamped with 51.2.17 .) 09 May 2001 Good physical condition. Some rust on battery clip. Fully functional. Fully functional (14 May 2001).
Lloyd's
Accumatic 333

5F-124929
1975 (IC stamped with 7523, keyboard with 50.7.17 .) 10 May 2001 Fair physical condition. Paint worn off on sides. Fully functional. Fully functional (16 May 2001).
Sanyo
ICC-83 (SACOM MINI)

5021133 S
1973 (TMS0101 IC stamped with 7303.) 13 May 2001 Good physical condition. Fully functional. Missing power adapter with special connector. Fully functional (24 Feb 2008).
Casio
HL-806

2040048 (inside)
1979 (IC stamped with 9G 43.) 13 May 2001 Good physical condition. Fully functional. Fully functional (18 Mar 2001).
Texas Instruments
SR-11

SR-11539355
1974 (SN75494 ICs stamped with 7410.) 13 May 2001 Good physical condition except for corrosion on battery connectors. Functional. Fully functional (30 May 2001).
Novus
850

114961
1975 (MM5737 IC stamped with 513, DM8864 with 520.) 13 May 2001 Good physical condition. Fully functional. Fully functional. Needs new battery clip and power connector nut (18 Mar 2001).
Lloyd's
Accumatic 310

5H-82004
1975 (IC stamped with 562N, display with 5J.) 13 May 2001 Good physical condition except battery connectors corroded. Fully functional. Fully functional (18 Mar 2001).
Unitrex
Mini Handy 80M

A57K63843
1975 (A4130 IC stamped with 7520, T1347 with 5D.) 13 May 2001 Good physical condition. Fully functional. Fully functional (17 Mar 2001).
Commodore
GL-997 RF

95605
1977 (IC stamped with 1977.) 19 May 2001 Good physical condition. Functional. Fully functional (28 May 2001).
Digimatic
P8 (Model No. 41031)

113467
1973 (15332 IC stamped with 7341, others ICs with 7319, 7329.) 21 May 2001 Fair physical condition, scratch marks on aluminum faceplate. Some corrosion from batteries. Functional. Missing power adapter with special connector. Rechargeable battery pack had been removed. Fully functional (27 May 2001).
Digimatic
D8 (Model No. 41024)

118685
1974 (A4001 IC stamped with 7426, others ICs with 7411, 7413, 7414.) 21 May 2001 Fair physical condition, original power connector had been removed and a hole made in the side for a new connector. Functional, except "L" low battery indicator always on. Rechargeable battery pack had been removed. Fully functional (28 May 2001).
Royal
Digital V

82 21574
1972 (IC stamped with 7233, display with 2K.) 21 May 2001 Good physical condition. Missing power adapter with special connector. Rechargeable battery pack had been removed. Fully functional (23 May 2001).
Keystone
395 / exponent 1

C377258
1974 (IC stamped with 7401, display with 7340.) 21 May 2001 Good physical condition. Fully functional. Fully functional (31 May 2001).
TwinScents
Bath Math

(irrelevant)
1975 presumably, based on the similarity to the apf 40 of 1975. 24 May 2001 Never used (thankfully). Still surfeit with fragrance after a quarter of a century. Never used (24 May 2001).
Philips
P-63 Statistical

010499
1975? (ICs stamped with 523 and 525.) 29 May 2001 Good physical condition. Functional. LED display has several in-operative segments due to the poor connection of the segment wires to the display busses (31 May 2001).
RT
3

(not specified)
1977 (IC stamped with 7721 or /721.) 29 May 2001 Good physical condition. Fully functional. Fully functional (01 Jun 2001).
Texas Instruments
TI Programmer

0002755
1979 (IC stamped with 7936, PCB with 7938, plastic bottom stamped with ATA 4179.) 19 Jun 2001 Excellent physical condition. Fully functional. Fully functional (19 Jun 2001).
Sharp
EL-8010

67215332
1976(?) (T3287 IC stamped with 6A.) 19 Jun 2001 Good physical condition. Minor corrosion from batteries. Fully functional. Fully functional (19 Jun 2001).
Sharp
EL-104

63204964
1976 (IC stamped with 6D.) 07 Jul 2001 Good physical condition. Fully functional. Fully functional (09 Jul 2001).
Digimatic
M8-3 (Model No. 41015)

112785
1975 (IC stamped with 7505.) 07 Jul 2001 Good physical condition. Fully functional. Fully functional (12 Jul 2001).
Digimatic
M8-3 (Model No. 41015)

121829
1975 (LC1552F IC stamped with 7519, keyboard stamped with 50.5.26.) 10 Jun 2002 Good physical condition. Fully functional. Fully functional (11 Jun 2002).
Keystone
2050

C248340
1974 (IC stamped with 7422, display with 7416.) 07 Jul 2001 Fair physical condition, some rust stains inside, seemingly from something spilled in it. Erratic display, segment a does not work. Non-functional (29 Sep 2001).
Commodore
C110

G12950
1972 (batteries stamped with 7232) 10 Mar 2002 Good physical condition, minor corrosion on some screws and printed circuit traces. Fully functional (14 Mar 2002).
Casio
pocket-8

4142022
1975 (power supply module (Fuji MPS 0605) stamped with 5A-17) 07 Jul 2003 Fairly beat up, missing battery cover plate. Functional (14 Jul 2003).
Novus
6010 "International Computer"

1012552
1975 (ICs stamped with 524 and 523.) 04 Apr 2005 Wet from rain but otherwise good physical condition. Non-functional. Functional except LED display has 4 in-operative segments due to the poor connection of the segment wires to the display busses (05 Apr 2005).
Lloyd's
Accumatic 55

8-19895
1974 (IC stamped with 7448.) 16 Mar 2008 Good physical condition except neg. battery connector corroded. Some corrosion on power jack from battery potential. Functional. Functional (17 Mar 2008).
Hewlett-Packard
80

1247A29099
1973 (IC date code 7315) Jun 2014 Good. Functional. Functional except intermittent operation when switched on (battery contacts or power switch) (Aug 2014).
Hewlett-Packard
34C

2032S31994
1980 (serial number 20xx.) 03 Aug 2014 Good. Missing battery compartment door. Minor copper corrosion in vicinity of batter contacts. Segment c not displaying. Fully functional (03 Aug 2014).
National Semiconductor
International Computer

not present
1977 (PCB stamped with M764) 03 Aug 2014 Good. Functional. Functional (03 Aug 2014).
(51 items)



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