doorperson
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Little man computer — The Little Man Computer (LMC) was created by Dr. Stuart Madnick as an instructional model. The LMC models a simple von Neumann architecture computer, so it has all of the basic features of a modern computer. The LMC can be programmed in machine… … Wikipedia
janitor — [n] person who cleans and maintains attendant, caretaker, cleaning person, concierge, custodian, doorkeeper, doorperson, gatekeeper, house sitter, porter, sitter, super, superintendent, sweeper, watchperson; concept 348 … New thesaurus
porter — [n] person who serves as attendant, caretaker baggage carrier, bearer, bellhop, carrier, concierge, doorkeeper, doorperson, gatekeeper, janitor, redcap*, skycap*, transporter; concept 348 … New thesaurus
usher — [n] person who guides others to place attendant, conductor, doorkeeper, doorperson, escort, guide, herald, lead, leader, page, pilot, precursor; concept 352 usher [v] guide bring in, conduct, direct, escort, herald, inaugurate, initiate,… … New thesaurus