Psion Series 3a
The most obvious upgrade to the Psion 3a is a larger screen, now 480 x 160. The Series 3a has a NEC V30H CPU (running at 7.68 MHz), a microphone for voice recording, an I/O port (for modem, printing and PC synchronization), and 256 kB, 512 kB, 1 MB or 2 MB of RAM. The backup battery for the Series 3a is a CR1620. The Psion Series 3a range was revised in 1995 to include models with 1 MB or 2 MB of RAM and additional software was factory preloaded into the ROM. This included a spell checker and thesaurus, Comms software, games and more, though all of these had been available previously as optional extras (or in the case of the Comms software, as a program loaded from the ROM of the 3Link serial connector) for earlier models.
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