Jupiter Ace chip ID and location > Misc Parts ID and Location.

Logic ICs and Gates

Parts Z14, 15, 16, 17, 18. are tri-state buffers.

Z15 and Z16 are display RAM buffers they allow the CPU to address the video display RAM.

Five of these chips are used in total.

XTAL Crystal
1 is used in the Ace.
The one in this image runs at 6.5536 Mhz, which would give a 3.2768Mhz Clock speed for the Z80A CPU
Connections Input/Output parts.
3.5 Mono Jack sockets.
3 are used in the Ace.
Uses for the Tape Input/Out ports on the Ace.

Also as the Power Input [See here for 3.5 Power details]