on the array board with the led blocks there are;
- MICREL MIC5822BN,
- ELM-2002EWB/P17 LED Blocks
On the control board these are the support chips;
U3 & U4 - R65C102P4 and R65C22P3
U5 - MS62256L-10PC
U18 - TIBPAL 16L8-25CN
U19 - some sort of EEPROM
U6 - PC74HCT165P
U20 - CD74HCT161E
U21 - TIBPAL 16L8-25CN
U7 - CD74HCT93E
U22 - MM74HCT74N
U8 - 20 MHz crystal
U11 - MC74HCT244AN
U24 & U31 - SN74LS138N
U25 & U32 - ULN2803A
U11 - MC74HCT244AN
15) IRFZ34
The board has a power supply that feeds +24,+12,+5,+5rows,+15