Patent ID: 7969769

Claim:
A circuit comprising: a first three-terminal device, said first three-terminal device including a chalcogenide material, said chalcogenide material having a first threshold voltage, said chalcogenide material switching from a resistive state to a conductive state upon application of said first threshold voltage; a first terminal in electrical communication with said chalcogenide material; a second terminal in electrical communication with said chalcogenide material; a third terminal in electrical communication with said chalcogenide material; an input terminal for receiving an input signal; a clock terminal for receiving a clock signal; and an output terminal for providing an output signal, said input terminal delivering said input signal to said second terminal, said clock terminal delivering said clock signal to said first terminal, said output terminal being in electrical communication with said third terminal; wherein said clock signal has an ON cycle and an OFF cycle, the voltage delivered by said clock terminal to said first terminal during said ON cycle being greater than the voltage delivered by said clock terminal to said first terminal during said OFF cycle and the voltage delivered by said clock terminal to said first terminal during said ON cycle is less than said threshold voltage of said chalcogenide material between said first terminal and said third terminal when no signal input is present at said second terminal; and wherein said circuit performs a logic operation selected from the group consisting of AND, OR, NOT, NAND, NOR, XOR, and XNOR.