Sándor Székely-Doby

As a junior engineer at Standard Villamossági Rt. (BHG), he also participated in the central design of the Magyar Posta apartment building. In his article on automatic calculators published in 1954, he argued that although electronic devices were the future, electromechanical calculators should be built in our country first. – However, he was dismissed from BHG due to his attitude in 1956.
As an unemployed person (for half a year), he contributed to the design of the BME electromechanical calculator; the machine was later named MESZ I by László Kozma. At the invitation of László Kalmár, he also gave a lecture on the construction of the calculator in Szeged in 1957, see below (this was the first lecture on the design of MESZ I, which contains irreplaceable details).

In the mid-1950s, he was Jenő Egerváry's graduate student on topics related to railway insurance systems. – Meanwhile, he helped László Kalmár a lot in the design of another domestically developed electromechanical calculator, the Szeged logic machine.
In 1960, he participated in the work of the preparatory committee for the first national long-term cybernetics research plan entitled "Development and Use of Cybernetics".
In 1965, he defended his PhD thesis entitled “Modern Railway Informatics Switching Technology”, among the first in this field. – Later, he also obtained a PhD degree at BME.

From 1968 he was a technical and economic expert at the Road-Railway Design Company (UVATERV). He established its Railway Telecommunications and Insurance Equipment Department as a new profile and, among other things, under his direction the design documentation for the telecommunications and insurance equipment of the 500 km long North African railway line was completed.

From the 1960s, he taught for a decade and a half at the Department of Mechanical Engineering and then Electrical Engineering Mathematics of the Budapest University of Technology (BME). He regularly gave lectures on technical and mathematical topics in scientific associations, conferences and at the Institute of Continuing Engineering Education. BME recognized his activities with the title of honorary associate professor.

From 1979, he was the head of the department of the Faculty of Automation of the then Technical College of Transport and Telecommunications (KTMF) in Győr. He invested a lot of energy in the modernization of education. He designed the railway laboratory; also the control equipment of the model railway system, which served the education of railway students for many years. – He has published numerous articles, studies and notes.
After his appointment as head of the department expired, he continued to participate in the educational work of the Department for many years, until 1993, where (in addition to his narrower field of expertise) he also did pioneering work in the teaching of computer-aided design methods. He continued to teach classes even after the Győr College became a university (Széchenyi István University, SZE); he also undertook to teach new subjects.

He was a member of the board of the Hungarian University and College Teachers' Association.
His teaching work was recognized with the Széchenyi Memorial Plaque and in 1994 with the János Apáczai Csere Award. BME awarded him an Iron Diploma in 2016.