For example, in a computer, address information is transmitted synchronouslyâthe address bits over the address bus, and the read or write 'strobe's of the control bus. Single-wire synchronous signalling. A logical one is indicated when there are two transitions in the same time frame as a zero.
A typical laser maze is a rectangular room filled with a web of laser beams which players attempt to negotiate without âtrippingâ one of the beams. The idea behind the game comes from movies like the 1999 blockbuster film Entrapment, starring Catherine Zeta Jones and Sean Connery, Mission Impossible, and Oceanâs 12.
Cathode ray. A beam of cathode rays in a vacuum tube bent into a circle by a magnetic field generated by a Helmholtz coil. Cathode rays are normally invisible; in this tube enough residual gas has been left that the gas atoms glow from fluorescence when struck by the fast moving electrons. Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes.