A controversy has arisen as to whether instrument vendors are providing sufficient information about instrument-associated software to permit users to understand invisible data transformations going on inside of the equipment. Topics addressed include software protection, user modifications, and publishing software. (Author/JN)

Describes development of microcomputer-controlled gamma scintillation spectrometer and chromatographic data analyzer, including design and construction of interface electronics and production of software. Includes diagrams of electric circuits and project evaluation indicating that both instruments functioned as intended. (JN)

Describes a procedure used to optimize instrument performance as taught in a fourth-year undergraduate instrumental analysis course. Gives rules for fixed and variable size simplex and discusses calculations. Also explains use of computer simulation of instruments as a tool in teaching the simplex technique. (JM)

Describes a system of interfacing allowing a range of signal conditioning and control modules to be connected to microcomputers, enabling execution of such experiments as: examining rate of cooling; control by light-activated switch; pH measurements; control frequency of signal generators; and making automated measurements of frequency response of…

Describes an interface designed to meet the requirements of an instrumentation teaching laboratory, particularly to develop computer-controlled digital circuitry while exploiting electrical drive properties of common transistor-transistor logic (TTL) devices, minimizing cost/number of components. Discusses decoding for Pet, switches, lights, and…