|Voyager series, logic PCA and keyboard PCA|
Message #1 Posted by Geoff Quickfall on 28 July 2009, 2:19 p.m.
Hello and thanks for the help in advance.
Pictured are the three PCA versions I have in my collection (ignoring all the 12C variations of late!). These are the ones during the production run of the Voyagers from 1980 to about 1989.
-3 variations of the 11C circuit board
*the early two-piece-PCA; logic/LCD flex PCA and keyboard PCA
*the early one-piece-PCA-two-ICs
Here is an HP-10C early version two-piece-PCA (I have an 11C with the a similar board):
Here is an early one-piece-two-ICs HP-11C:
Here is the one-piece-PCA-one-IC HP-11C:
My questions are,
- Were all the early versions of the 10C to 16C a two-piece-PCA system (I have only two examples; a 1980 11C and a 1982 10C). First picture.
- Was the one-piece-two-ICs an intermediate between the two-piece-PCA and the one-piece-one-IC version? Second picture.
- Was the final iteration the one-piece-PCA-one-IC pictured? Third picture.
Cheers, and thanks.
Edited: 28 July 2009, 3:08 p.m. after one or more responses were posted