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NEC Z80
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NEC D780C
NEC D780C Top Side
NEC
JAPAN
8240PX
D780C
NEC D780C Back Side
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Core Frequency:2.5 MHz
Board Frequency:2.5 MHz
Data bus (ext.):8 Bit
Address bus:16 Bit
Manufactured:week 40/1982
Made in:Japan
Package Type:Plastic
DIP-40
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NEC D780C-1
NEC D780C-1 Top Side
NEC
JAPAN
8240X5
D780C -1
NEC D780C-1 Back Side
This is a Z80 compatible CPU and is built in my Sinclair ZX-81 computer from 1982.
 
Comment by Andrew (Lazerguy9000[at]aol.com):
This cpu is built into the daughter board of my former Omega Race arcade machine.
 
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Core Frequency:4 MHz
Board Frequency:4 MHz
Data bus (ext.):8 Bit
Address bus:16 Bit
Manufactured:week 40/1982
Made in:Japan
Package Type:Plastic
DIP-40
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