In message <Pine.LNX.4.33.0312121854520.9998-100000(a)siconic.com>
Vintage Computer Festival <vcf(a)siconic.com> wrote:
The 74xx numbers are most likely date codes.
And
would seem to tally with the general age of the calculator - i.e. the
back end of 1974.
Anyway, I couldn't get N-sized Nicad batteries, so I bought four 650mAh 2/3AA
NiMH cells. I've got the calculator on charge now - fingers crossed...
Later.
--
Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpem(a)dsl.pipex.com | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.dsl.pipex.com/ | 48xCD, ARCINv6c IDE, SCSI
He's DEAD, Jim. You get the Tricorder, I'll get his wallet!