Portable electronic device for use in conjunction with a screen

Details Portable electronic device for use in conjunction with a screen Portable electronic device for use in conjunction with a screen

1988-07-11

1990-03-20

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 24, 235379, 235380, 235382, 34082531, 34082534, G06F 1502

Patent

active

049107755

ABSTRACT:
The portable electronic device (1) includes some optical reception devices (R), a microcomputer (4) suitable for processing the data received, a display device (6) to display data from the microcomputer (4), and an electrical energy source to supply the various circuits. The device includes a keyboard (8) which enables the user to also to key in data into the microcomputer (4), the latter being programmed to use the data from the optical reception devices (R) and/or from the keyboard (8), and to display results taking account of the data, possibly combined.

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