Overview
The HP 98201-66501 keypad interface is a printed circuit board designed for custom keypad input translation and system control in legacy HP equipment. This 48L RevA A-2306-40 model provides reliable interface functionality between keypad hardware and the main system controller, supporting equipment from HP’s classic computer and instrumentation product lines.
Key Features
- Custom keypad interface for HP legacy systems
- Revision A hardware with proven field reliability
- PCB form factor: 48L layout with A-2306-40 design variant
- Used condition: fully functional for replacement and repair applications
- Readily available in-stock surplus inventory
Technical Specifications
Detailed specifications are inherent to the legacy HP ecosystem design. This interface board was engineered to handle input signal processing and keypad matrix scanning typical of HP mid-range computer and instrumentation products from the 1970s–1980s era. Mounting and electrical specifications align with standard HP backplane and cage standards of that generation.
Typical Applications
- Restoration and repair of legacy HP 98xx-series computer systems
- Replacement of failed keypad input interface cards
- Equipment maintenance where original HP spare parts are scarce
- Hobbyist and museum equipment preservation projects
- System integration and troubleshooting in vintage computing environments
Compatibility & Replacements
Compatible With
- HP 9800-series desktop computers and calculators
- HP legacy instrumentation systems using standard HP backplane architecture
- Equipment with HP-standard cage and card edge connectors
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. This interface board is model-specific; substitution requires confirmation of keypad matrix pinout and signal timing compatibility.
Works With
- HP standard backplane architectures
- Legacy HP control and monitoring software
- Standard keypad matrix scanning protocols of the era
