The optoelectronic logic element AND, OR and XOR is considered, the output signal of which can be inverted when the input control signal is applied, thereby converting the logic element into NAND, NOR ...

Logic elements, which are the basis of modern digital technology, are based on the use of Boolean logic. In 1854, George Boole proposed for the first time to investigate logical statements by ...

i don't think the php matters so much, but thought i'd throw it in there.<BR><BR>i've got a form that's basically got several weeks on it, and i need to 1) validate text box entry with javascript, and ...