Changes
/* Further Chips */
2 K555KP7 74LS151 8bit multiplexer (D24=sheet2,D81=sheet4)
1 K555KP11 74LS257 8-to-4 data selector (D38=sheet1) (clock select)
1 K555KP12 74LS253 2x 4vstup. multiplexer, TS "8-to-2 line 3-state noninverting data selector/multiplexer" (D26=sheet3)
.. K555LA3 74LS00 Quad NAND gates (various)
.. K555LE1 74LS02 Quad NOR gates (various)
5 K555TM2 74LS74 Dual flipflop (D40,D77,D66,D57=sheet1, D71=sheet3)
6 K555TM9 74LS174 6bit flipflop (D32,D55,D56=sheet1, D59=sheet2, D68=sheet3, D79=sheet4)
=== Chipset Notes ===
