The Brandywine Communications PC104-SG is a timecode reader/ generator that provides precision time with zero latency to the host computer over the PC104 bus. An on-board microprocessor automatically synchronizes the clock to reference signal inputs. The built-in clock of the PC104 accepts IRIG A, IRIG B, or NASA 36 synchronization inputs and user input signal delay compensation information. An IRIG B DC shift code generator is included and this clock can free run and be preset by commands from the host over the PC104 bus. GPS synchronization and Have Quick sync inputs are optionally available as well.