There aren't any similarities. They are different types of components.
You must mean output relay interface. Essentially, it's a circuit board with one or more relays used for switching electrical loads by another device such as a computer or programmable controller.
Yes, if they are programmable. No, if they are not programmable.
Electrically Programmable Logic Device Erasable Programmable Logic Device Electronic Programmable Logic Device
No, it's not programmable.
FPGA - Field Programmable Gate ArrayA field-programmable gate array is a semiconductor device containing programmable logic components called "logic blocks", and programmable interconnects.
Ladder programming is used in Programmable Logic Controllers (PLC's) and is designed to be easily understood by engineers who are used to relay systems. It uses symbols for relay coils, timers and contacts. The advanced capabilities of the PLC e.g maths and logic functions are not used.
Using and gate - pla is programmable while pal is fixed
The Tunturi T20 programmable Treadmill, has programmable features for setting speed, elevation and hand pulse measurement.
what are functions of programmable ROM
was the first programmable robot built in 1954
A freely programmable computer is a computer that can be programmed and reprogrammed by the user. Almost all modern computers are freely programmable.