33,244
edits
mNo edit summary |
No edit summary |
||
Line 118: | Line 118: | ||
===Microcontroller-based Readout Board=== | ===Microcontroller-based Readout Board=== | ||
Finally, from 1989/1990 on, a third generation readout board designed around an 80C31 micro-controller replaced the previous versions in the last series of [[7104]], [[R7103]], [[R7844]], [[7904A]], [[7603]] and [[7623B]] models. This version no longer used any Tek-made special ICs, manufacture of which had been discontinued by that time. The board is part SMD, part through-hole. It is described in [ | Finally, from 1989/1990 on, a third generation readout board designed around an 80C31 micro-controller replaced the previous versions in the last series of [[7104]], [[R7103]], [[R7844]], [[7904A]], [[7603]] and [[7623B]] models. This version no longer used any Tek-made special ICs, manufacture of which had been discontinued by that time. The board is part SMD, part through-hole. | ||
It is described in | |||
[[Media:070-4593-00.pdf|this version of the 7904A manual]] | |||
(pages 288 through 291 describe the EPROM version above, while the 80C31 version is shown on pages 380 through 391). | |||
<gallery widths=300 heights=300> | <gallery widths=300 heights=300> |