No. Don't get confused between a mainframe and a server.
companies on need a few not thousands
Computers, Which are technically superior to mainframe are called super 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.
Mainframe computers first used star topology
Mainframe computers are high-speed, multi-purpose machines that cost millions.
IBM system 3 and AS-400 are some examples of minicomputers.
IBM
mini and mainframe computers
no
For a mainframe with terminals, data processing takes place on the mainframe computer only as the terminals are 'dumb'. Conversely, in a network of computers, each computer has its own processor.
yes
There are not a large number of mainframe jobs available at this time. Computer programmers will be around as long as there are computers. There are so many different brands of computers available.