Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- national_semiconductor [2023-04-29 15:04:10] – manfred
+++ national_semiconductor [2023-04-29 16:41:49] (aktuell) – [MAPS (MM570x) - National Semiconductor] manfred
@@ Zeile 1: / Zeile 1: @@
+====== National Semiconductor ======
+  * [[https://de.wikipedia.org/wiki/National_Semiconductor]]
+===== MAPS (MM570x) - National Semiconductor =====
+//The National MM5700 or National MM57XX series a family of **4-bit calculator chips** designed by National Semiconductor. The chips were made using PMOS technology, most designed for 9V battery, had an a very limited set of math operations - some only as few as addition, subtraction, multiplication, and division. These chips were made as part of National attempt to enter the ultra-low-end calculator market.//
+  * [[https://en.wikichip.org/wiki/national_semiconductor/maps|MAPS (MM570x) - National Semiconductor]]
+  * [[http://www.bitsavers.org/components/national/_dataBooks/1972_National_MOS_Integrated_Circuits.pdf]]
+==== Das Rechenwerk "Olympia CD700 M71" ====
+  * [[https://youtu.be/8LnCGahnhb4|Einzigartiges Rechenwerk: Olympia CD700 | Vintage Rechenmaschine]]
+    * national semiconductors **MAPS** (Microprogrammable Arythmetic Processor System)
+    * besteht aus
+      * MM5700 - ALU (max. 750 kHz)
+      * MM5701 - register
+      * MM5702 - timing and control unit
+      * MM5703 - control ROM (extension)
+      * MM5704 - keyboard interface unit
+      * MM5705 - control ROM
+      * MM5706 - static Data Monitor