Zuken Inc. (株式会社図研, Kabushiki-gaisha Zuken^?) (TYO: 6947) is a Japanese multinational corporation, specializing in software and consulting services for end-to-end electrical and electronic engineering. Zuken came into existence as a pioneer in the development of CAD systems in Japan to contribute to electronics manufacturing. The literal translation of Zuken is "graphics laboratory." Established in 1976 in Yokohama, Japan, it is listed on the Tokyo Stock Exchange; net sales amounted to USD202 million for the year 2009.

Zuken's software is primarily used for designing printed circuit boards (PCBs), Multi-Chip Modules, and for the engineering of electrotechnical, wiring, wiring harness, pneumatics and hydraulics applications. Furthermore, Zuken offers software for electrical and electronic engineering data management (e-PLM). Zuken is one of three major EDA companies which specialize in PCB design software, the other two being Cadence Design Systems and Mentor Graphics. Recently Zuken is developing software that move in the direction of total optimization of design based on collaboration between EDA and MDA (Mechanical Design Automation), between EDA and PLM (Product Lifecycle Management), and between MDA and PLM.

Errol Black is a retired university professor and former municipal politician in Brandon, Manitoba, Canada. He has been an activist with the New Democratic Party for several years.

Black was born September 6, 1939 in Brandon, Manitoba. He is a Professor Emeritus at Brandon University, where he taught for many years in the fields of Economics and Industrial Relations. He is the co-editor of such books as Hard bargains : the Manitoba labour movement confronts the 1990s (1991), A square deal for all : historical essays on labour in Brandon (2000) and Building a better world : an introduction to trade unionism in Canada (2001). He has written several pieces for Canadian Dimension magazine, and has done research for the Canadian Centre for Policy Alternatives. During the early 1980s, Black argued that university president Harold J. Perkins was ruling the university in an autocratic manner, and supported his removal by the Board of Governors. He later served as president of the Manitoba Organization of Faculty Associations in the 1990s.