Large area charge coupled device (CCD) imagers with fewer defects are now becoming avail-able in quantity and the demand for small, stable, high resolution standard and specialized cameras is increasing. This demand is for CCD camera systems operating in any one of three different modes: (1) full-frame mode, used for staring applications, (2) frame-store mode,' used for TV applications and (3) time-delay and integration mode, used for scanning applica-tions. The camera designer is challenged to assure commonalty in his circuitry in order to provide rapid reaction to customer system requirements with affordable cameras. This tech-nique will allow for standard building blocks (PC board modules) to be selected and assem-bled together with appropriate housings and wiring harnesses to provide cameras in any of the three modes mentioned above. The modular concept includes various logic modules, video modules, power supply modules, CCD front-end modules and several special purpose modules in-cluding an analog-to-digital converter module, a thermo-electric cooling package and a low light level intensifier tube assembly. These modules are initially to be fabricated using standard off-the-shelf parts, and will be suitable for conversion to large-scale-integrated (LSI) and hybrid packages as volume warrants.