Electro (or electro-funk)[3][4] is a genre of electronic music and early hip hop directly influenced by the use of the Roland TR-808 drum machines[5][6] and funk.[7][8] Records in the genre typically feature heavy electronic sounds, usually without vocals; if vocals are present, they are delivered in a deadpan manner, often through electronic distortion such as vocoding and talkboxing. It palpably deviates from its predecessor boogie by being less vocal-oriented and more focused on electronic beats produced by drum machines.
Here the link of the source I took the information from:https://en.wikipedia.org/wiki/Electro_(music)