digital logic - Can you use diodes instead of OR gate?

I am building a computer and thought if I could simply use diodes instead of OR gates. Will this work with logic ICs such as the 74LS, 74HC and 75HCT series?

Sorry if this is a stupid question, I am new to electronics.

Answer

There is a really cool trick that you can use under specific conditions that allows you to build a 2-input OR gate or AND gate using only 1 diode and 1 resistor.

The conditions are:

1) The circuit is low speed.

2) The load impedance is high, such as a CMOS input.

^{simulate this circuit – Schematic created using CircuitLab}

This can be expanded to as many inputs as needed by adding more diodes.