I regret to say your question is not specific enough to answer here. As written your question would take at least an entire library of books which would probably take at least a decade to finish reading, by which time several new bookcases of history would likely have been written.
Prior to 1945 dictionaries defined the word computer as "one who computes", referring to a human and large businesses frequently employed several hundred of these human computers to do complicated and tedious calculations.
You don't HAVE to, but if you are planning on working in the computer field and want to avoid some of the mistakes made in the field in the past you might want to consider it. Also it can be interesting.
Electro-Mechanical Computers were used before first generation of computers.
Yes they can.
roughly 1890 through 1960, it overlaps first and second generation electronic computers with some equipment still in use in the 1970s assisting third generation electronic computers for offline functions.
Alan Turing's work in the 1940s led to the development of modern computers. Computers small enough to be used in homes have been available since the early 1980s.
information about history of computers information about history of computers
Mainframes have a history spanning over 60 years: 1950s: Early large-scale computers such as IBM's 701 introduced centralized computing for governments and businesses. 1960s: IBM launched the System/360 (1964), creating a standardized mainframe family that could support different business workloads. 1970s–80s: Mainframes became central to banking, airlines, insurance, government, and large enterprises. Technologies such as CICS, DB2, and COBOL became widely used. 1990s: Mainframes evolved with stronger networking, virtualization, and enterprise database capabilities, while continuing to run critical legacy applications. 2000s–2010s: IBM's zSeries/System z platforms integrated Linux, virtualization, improved security, and web technologies. Today: Modern IBM Z systems continue to process high-volume, mission-critical workloads while integrating with cloud, APIs, DevOps, analytics, and AI. In short: Mainframes evolved from large centralized computers into highly secure, resilient enterprise platforms that still power critical digital services worldwide.
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Hands on History - 2001 Computers was released on: USA: 17 November 2001
You don't HAVE to, but if you are planning on working in the computer field and want to avoid some of the mistakes made in the field in the past you might want to consider it. Also it can be interesting.
Wikipedia is a great website that offers a ton of information on the history of personal computers. There are many other websites that include information about personal computers also.
Electro-Mechanical Computers were used before first generation of computers.
starting from hands to pc.
I don't know what you are asking. Something is missing.
different person being part of the history of computer
if there is a museum on history of computers he is probably in it.
It was an invention that changed the history of computers.