BUY HP2631 https://www.utsource.net/itm/p/955870.html

The HP2631 is a DIP-8 integrated circuit manufactured by Hewlett-Packard. It is an 8-bit microprocessor designed for use in embedded applications. It features an 8-bit data bus, a 16-bit address bus, and a 16-bit program counter. It also has an internal clock generator and an interrupt controller. The HP2631 is suitable for use in embedded control systems, data acquisition systems, and other applications that require a low-power, low-cost microprocessor. It is also suitable for use in educational projects, as it is easy to program and debug. It can be used in a wide range of applications, including robotics, automotive, industrial, and medical. (For reference only)