The following is an example in pseudocode based on Applied Cryptography by Bruce Schneier.
Modular arithmetic | Exponentiation | Shioda modular surface | modular synthesizer | Modular building | Siemens Modular Metro | Modular synthesizer | Modular product of graphs | Modular Integrated Communications Helmet | Modular form | M26 Modular Accessory Shotgun System | Iron Man's armor#Modular Armor | Hilbert modular surface | Hilbert modular form | Ford Modular engine |