[en] The Programmable Data Acquisition and Control (PDAC-100) system was designed to provide data acquisition and control functions for dedicated in-plant nuclear safeguards systems. The PDAC-100, along with a detector, peripherals, and input/output devices, functions as a programmable multichannel analyzer, controls devices, acquires data, analyzes the results, and displays computed values. The PDAC-100 is packaged as a six-wide nuclear instrumentation module (NIM). The NIM standard allows the flexibility to use the optimum signal conditioning, analog-to-digital conversion, and stabilization electronics required for the specific application. The PDAC-100 uses a Motorola MC6802 microprocessor that executes a program stored in read-only memory. The program can be written in Motorola 6800 assembly, FORTRAN IV, or BASIC language. As an analyzer, the PDAC-100 uses an external analog-to-digital converter and an XYZ oscilloscope to acquire and display spectra of 1024 channels