In 1981 Casio released the MT-40 keyboard, unknowingly marking a new era in music history, especially in Jamaica. King Jammy and Wayne Smith used it to create the first ever fully computerized riddim, by altering one of the pre-programmed rock rhythms. The year was 1984 when they released the track "Under Mi Sleng Teng". They named the riddim Sleng Teng.
Have a listen.
Sleng Teng on the Casio MT-40

Wayne Smith - Under Me Sleng Teng (1984)

Many artists from the Jamaican music scene used the riddim to create their own versions, creating a legacy of great many tracks. There were over 200 various versions of the riddim by every producer in Jamaica. It basically eliminated the need for expensive audio equipment. Any MC could make his own version with the MT-40. It's considered arguably one of the most influential tunes ever to be sampled. The catchy riddim is still alive today and is being reused over and over by musicians from around the world.
Image source
I've compiled some of my favorite tracks that used Sleng Teng riddim.
Sleng Teng Riddim Mix (1985- 1995)

Super Cat - Sleng Teng Riddim

Dreadsquad & Perfect Giddimani - Champions anthem

Peter Metro - The Don

Ninja Man - Murder Dem

Terry Ganzie - Mi Gun Talk

Ninjaman - Write Your Will

Johhny Osbourne - Buddy Bye

Burro Banton - Attention

Elephant Man - Bumboclaat

Mad Cobra - Old School

Cocoa Tea - Joker Loving

Cypress Hill - Under Mi Sleng Teng

And the list goes on...