Mainframe computers are vital to one of the world's largest companies. Each central unit has more modern processors, RAM from a few megabytes to more gigabytes, and disk space and storage than a microcomputer. The mainframe can control multiple tasks and serve thousands of users every second without stopping.
The main difference between mainframes and other computing systems is the level of processing. Mainframes also differ in data bandwidth, organization, reliability, and control. Large organizations – banking, health, insurance and telecommunications companies, etc. – Large-scale computers are used to process large commercial data.
This article discusses the development of large-scale computers and their components
From the late 1944s to the 1970s, many companies manufactured mainframes: IBM, Burroughs, RCA, NCR, General Electric and Sperry Rand. Since then, System / 390 is a single mainframe used by IBM. IBM System / 360 developed in 1960.
An early large machine occupied the huge space. New technologies drastically reduced the hardware size and cost. The current generation of mainframe complements the small cabinet
Components of the modern mainframe computer
Like the PC, the mainframe has several components for processing data: operating system, motherboard or motherboard, Controls, Storage Devices, and Channels
• Motherboard: The central computer's motherboard consists of a printed circuit board that allows the CPU, RAM, and other hardware components to be the "bus architecture" concept. The motherboard has input cards and cable interfaces for various external devices. Where PC motherboards use 32 or 64-bit buses, mainframes use 128-bit buses. General instructions for the internal architecture help the motherboard to connect to other devices and query the data using binary computation
• Processor: The CPU acts as a central processing point in the mainframe architecture and contains an arithmetic logic unit (ALU) for arithmetic calculations. It also serves as a bus architecture control and handles traffic and data requests. The processing power of the chassis is much higher than the computers, so it can handle a huge amount of data.
• Storage devices: Storage devices are for data entry, retrieval, storage, and recording. Many external devices, such as hard drives, tape drives, and punch card readers, all of which are connected to the mainframe's terminal and are controlled by the CPU. Their storage capacity can be up to 100 or even thousands on a PC.
• Communication controllers: Communication controllers allow remote computers to access the mainframe. Through networks, LANs or WANs, communication controllers establish connections with various devices, transmit data through communication channels, and track users at terminals.
• Channels: "Channels" are the cables that use the CPU and the main storage system to other parts of the system and make sure the data is systematically moved without losing integrity.
Modern cabins are so advanced functions such as enhanced service management capability, platform integration capabilities, and more. and so are suitable for critical data center operation. The cost of maintaining modern large machines is much lower than the older models.