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.
You can think of a ray as a laser beam. It begins at one point and continues in one direction. Two letters are needed to name a ray; one is the point where it begins and the other is any point that it goes through. The symbol is the two letters with an arrow on top (as shown in diagram).