Key Points:

️· Introduction: The 7480 and 7481 Groups are 8-bit microcomputers using Mitsubishi's CMOS process. They're well-suited for control applications like automotive, office machines, and appliances.
️· Expansion & Product Family: They are part of the broader 7470 series of microcomputers. The 7480/7481 groups offer different memory sizes and package options for flexibility.
️· Memory Options: They support both Mask ROM and One-Time Programmable (OTP) PROM versions.
️· Key Features: Includes serial I/O, A-D converter, and a watchdog timer.
️· Organization: Chapter 1 details the hardware aspects of the devices, setting the stage for application development.

In essence, this section introduces the 7480/7481 series as a versatile and customizable 8-bit microcomputer designed for embedded control applications.