??? 02/19/06 06:10 Read: times |
#110287 - Options Responding to: ???'s previous message |
1.Shift registers. 3 chips 2 uP pins
2. Mux IC 6 selects (3 if you use a decoder) + 4 3 to 4 chips 7 to 10 uP pins. 3. diode switch array 10 uP pins. 4. direct connect 24 uP pins Plus others I am sure. |