According to an embodiment, a cement composition for use in an oil or gas well, the cement composition comprises: cement; water; and a polymer, wherein the polymer: comprises a monomer or monomers capable of forming a polyester; and is capable of providing a thickening time of at least 2 hours at a temperature of 400\xb0 F. The system utilizes Micro-Electrical-Mechanical system switches in place of one or more switches formerly implemented using transistor networks. Among the disclosed embodiments are integrated circuits having programmable test stimuli selectors, programmable scan enable circuits, programmable clock enable circuits, programmable shift enable circuits, andor programmable reset enable circuits. In another position of the valve member, the shear seal communicates with the first port and provides communication between the first port and the second port by way of a passage within the valve member.