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The CASIO PB-700 series

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This series include three machines : PB-700, PB-770 and the japanese release of the PB-770. The Japanese release of the PB-700 (with direct access to Katakana characters) does not exist.

Differences :

The PB-770 have a hot key to mathematical functions similar to those of later Casio (FX-700p, 720p PB ...).

Both PB-770 offer a range of statistical functions.

Default, the PB-700 has 4 kb of memory, the PB-770 has 8.

The PB-700 may board three OR-4, 4 kb extension memories, for a total memory of 16 kb.

The PB-770 may board three OR-8, 8 ko extension memories, for a total memory of 32 ko.

the Japanese version of PB-770, unknown in Europe, has a KATAKANA key for access to Japanese characters. On PB-700, the characters are available through CHR$() Basic function.