The Microbee is an Australian made home computer that was popular in the 1980's.
An FPGA or field programmable gate array is "an integrated circuit designed to be configured by a customer or a designer after manufacturing". An FPGA lets a user design custom digital electronic circuits on a PC and download the design to the FPGA chip.
FPGABee replicates the digital circuitry of a Microbee and can run original Microbee software without modification.
As a teenager I developed and sold Microbee games, so when I decided to teach myself about FPGA's recreating a Microbee seemed the obvious choice.