Here are the complete schematics of the LEO-1 system in PNG format and also as a downloadable zip of ExpressSCH files. I am not sharing the PCB layout files because a few of the boards had errors that needed some trace cutting and rewiring.

Memory Unit

Address Decoding	Real Time Clock	I/O Ports	DIP switches	ZIF sockets	Expansion 1	Expansion 2
ROM 0	ROM 1	ROM 2	ROM 3	LED 1	LED 2	LED 3
RAM 0	RAM 1	RAM 2	RAM 3	RAM 4	RAM 5	Power	Connectors

Control Unit

Front Panel	Clock	Decoding	Program Counter	Instruction Register	Bank Registers	ALU-B input high
ALU-B input low	Address bus high	Address bus low	Bus hold & Mux high 1	Bus hold & Mux high 2	Bus hold & Mux low 1	Bus hold & Mux low 2
LED 1	LED 2	LED 3	LED 4	Power	Connectors 1	Connectors 2

Register Unit

Register R0	Register R1	Register R2	Register R3	Register R4	Register R5	Register R6	Register R7
Control	LED 1	LED 2	LED 3	LED 4	Power	Connectors

Arithmetic and Logic Unit

Adder	AND	OR	XOR	B/SB	Shift In	Shift	Shift Out
Decoding	LED 1	LED 2	LED 3	LED 4	Power	Connectors

Visual Display Unit

Connectors

Control

Counters

Memory & Output

Miscellaneous

Digits