Expansion card for use with personal computer

摘要

The expansion card (1) plugs into the bus system of a computer and is based upon a number of function modules (2-5). Modules provide for decoding and identifying data signals (2), display and monitoring of operating voltages (3), interrupt generation (4) and representation of signal levels and pulses (5). The card provides information through the monitoring facilities that simply the installation, servicing and repair of the system.