Classic Series Derivations |
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| Model | Type | On/Off Switch Red Dot |
2.02 e^x Bug |
On/Off Switch Profile |
On/Off Switch Legend |
Front Legend |
#5 Key Raised Dot |
Battery Compartment |
Mfg Date 1st | Mfg Date Last | |||
| 35A 35A 35A 35A 35A |
I -- -- -- -- |
-- IIa IIb -- -- |
-- -- -- III -- |
-- -- -- -- IV |
Yes No No No No |
Yes Yes No No No |
low low low high high |
stamped stamped stamped stamped raised |
Hewlett.Packard Hewlett.Packard Hewlett.Packard Hewlett.Packard_35 Hewlett.Packard_35 |
Yes Yes Yes No No |
two parts two parts two parts one part one part |
???? 1143A 1143A 1302A 1346A |
???? 1143A 1230A 1302A 1346A |
| 45A 45A |
I -- |
-- II |
-- -- |
-- -- |
-- -- |
-- -- |
high high |
stamped raised |
Hewlett.Packard_45 Hewlett.Packard_45 |
No No |
one part one part |
1349A 1506A |
1349A 1506A |
| 80A 80A |
I -- |
-- II |
-- -- |
-- -- |
-- -- |
-- -- |
???? high |
???? raised |
Hewlett.Packard Hewlett.Packard_80 |
???? No |
???? one part |
???? 1247A |
???? 1247A |
20 Series Derivations |
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| Model | Display Decimal Point | Mfg Date 1st | Mfg Date Last |
| 21A 21A |
Triangular Regular |
1508A 1712S-ak |
1707B-ak 1712S-ak |
| 22A 22A |
Triangular Regular |
1601A ???? |
1601A ???? |
| 25A 25A |
Triangular Regular |
1510A 1608S-ak |
1601A-ak 1608S-ak |
| 25C 25C |
Trangular Regular |
???? 1601A |
???? 1612A-ak |
| 27A 27A |
Trangular Regular |
???? 1702S |
???? 1702S |
| 29C 29C |
Triangular Regular |
???? 1711A |
???? 1908S |
30 Series Derivations |
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| Model | Keyboard Outline | Keyboard Domes | Made in | Mfg Date | Weight (oz / gm) | |||||
| 31E 31E 31E-ak |
Silver Silver ---- |
---- ---- White |
---- ---- ---- |
---- ---- ---- |
Membrane Membrane ---- |
---- ---- Metal |
USA ---- ---- |
---- Singapore Singapore |
1846A 2001S 2032S |
6.1 / 174 6.1 / 174 5.0 / 142 |
| 32E 32E-ak 32E 32E-ak |
Silver Silver ---- ---- |
---- ---- White White |
---- ---- ---- ----- |
---- ---- ---- ---- |
---- Membrane Membrane ---- |
Metal ---- ---- Metal |
USA USA ---- ---- |
---- ---- Singapore Singapore |
1826A 1913A 2045S 2236S |
4.8 / 135 6.5 / 184 6.1 / 173 4.8 / 135 |
| 33E 33E-ak |
Silver ---- |
---- Whihte |
---- ---- |
---- ---- |
---- Membrane |
Metal ---- |
---- USA |
Singapore ---- |
1832S 1842A |
4.8 / 135 6.2 / 176 |
| 33C 33C-ak 33C-ak |
---- Silver ---- |
White ---- White |
---- ---- ---- |
---- ---- ---- |
Membrane ---- Membrane |
---- Metal ---- |
---- ---- ---- |
Singapore Singapore Singapore |
1842S 2038S 2109S |
6.2 / 176 4.8 / 135 6.2 / 176 |
| 34C 34C 34C-sv |
---- ---- Silver |
White White |
---- ---- |
---- ---- |
---- Membrane Membrane |
Metal ---- |
---- ---- |
Singapore Singapore Singapore |
2038S 2130S 2011S32632 |
4.7 / 132 6.3 / 178 6.3 / 178 |
| 37E-dm 37E |
---- ---- |
---- ---- |
Gold Gold |
---- ---- |
Membrane Membrane |
---- ---- |
USA USA |
---- ---- |
1850A 1903A |
6.3 / 179 6.1 / 174 |
| 38E 38E-ak 38E 38E-dm 38E-dm |
---- Silver ---- ---- ---- |
---- ---- ---- ---- ---- |
Gold ---- ---- Gold ---- |
---- ---- Green ---- Green |
Membrane Membrane Membrane ---- ---- |
---- ---- ---- Metal Metal |
USA USA USA USA ---- |
---- ---- ---- ---- Singapore |
1826A 1938A 1942A 1950A 2018S |
6.2 / 176 6.5 / 184 6.2 / 175 4.8 / 136 4.8 / 136 |
| 38C 38C |
---- |
---- |
---- |
Green Green |
Membrane ---- |
---- Metal |
---- |
Singapore Singapore |
2132S 2208S |
6.2 / 176 4.6 / 130 |