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[Raymond Del Tondo]

The HP-110 is an Intel architecture based portable computer.
Use the normal AC adapters with 8V output which all HP HP-IL device use, like HP 82066B, or the suitable model for your country.

Raymond

[Andrés C. Rodríguez (Argentina)]

IMHO, even the HP-41C is a computer !

:-)

I consider that a digital electronic device which:

- is programmable,

- can operate on at least two types of data (numbers and text), and

- has some mean of Input/Output which could be connected to other devices (using a documented protocol),

... qualifies for the computer "genre"

So, the HP-41C qualifies as a computer, while the 42S does not, due to the lack of suitable I/O (specifically "I", since there is at least some "O" to the IR printer).

Again, it is just an opinion...