First Generation Mainframes - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook First Generation Mainframes write by Stephen H. Kaisler. This book was released on 2018-11-30. First Generation Mainframes available in PDF, EPUB and Kindle. This volume describes several different models of IBM computer systems, characterized by different data representations and instruction sets that strongly influenced computer system architecture in the 1950s and early 1960s. They focused on a common system architecture that allowed peripherals to be used on different systems, albeit with specific adapters. These systems were modular, which made them easy to manufacture, configure, and service. Computing with UNIVAC, they used reliable Williams Tubes for memory, and later introduced magnetic core memory. IBM developed its own magnetic tape drives and magnetic drums that were both faster and more reliable than UNIVAC’s peripherals. The first software systems that could reasonably be called “operating systems” enabled more efficient use of programmer time and system resources. The development of programming languages, notably FORTRAN, and assembly language processors, notably Autocoder, improved the productivity of programmers. In addition, IBM developed one of the finest product marketing, sales and servicing organizations in the world. The legacy of the IBM 700 series is found in their popular successors, the IBM 7000 Series, which will be described in a forthcoming volume.
Reduce Risk and Improve Security on IBM Mainframes: Volume 3 Mainframe Subsystem and Application Security
Reduce Risk and Improve Security on IBM Mainframes: Volume 3 Mainframe Subsystem and Application Security - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Reduce Risk and Improve Security on IBM Mainframes: Volume 3 Mainframe Subsystem and Application Security write by Axel Buecker. This book was released on 2015-11-02. Reduce Risk and Improve Security on IBM Mainframes: Volume 3 Mainframe Subsystem and Application Security available in PDF, EPUB and Kindle. This IBM® Redbooks® publication documents the strength and value of the IBM security strategy with IBM zTM Systems hardware and software. In an age of increasing security consciousness and more and more dangerous advanced persistent threats, IBM z SystemsTM provides the capabilities to address the needs of today's business security challenges. This publication explores how z Systems hardware is designed to provide integrity, process isolation, and cryptographic capability to help address security requirements. We highlight the features of IBM z/OS® and other operating systems, which offer a variety of customizable security elements. We discuss z/OS and other operating systems and additional software that use the building blocks of z Systems hardware to provide solutions to business security needs. We also explore the perspective from the view of an enterprise security architect and how a modern mainframe has to fit into an overarching enterprise security architecture. This book is part of a three-volume series that focuses on guiding principles for optimized mainframe security configuration within a holistic enterprise security architecture. The series' intended audience includes enterprise security architects, planners, and managers who are interested in exploring how the security design and features of z Systems, the z/OS operating system, and associated software address current issues such as data encryption, authentication, authorization, network security, auditing, ease of security administration, and monitoring.
What On Earth is a Mainframe?
What On Earth is a Mainframe? - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook What On Earth is a Mainframe? write by David Stephens. This book was released on 2008-10-08. What On Earth is a Mainframe? available in PDF, EPUB and Kindle. Confused about zSeries Mainframes? Need to understand the z/OS operating system - and in a hurry? Then you've just found the book you need.Avoiding technical jargon, this book gives you the basic facts in clear, light-hearted, entertaining English. You'll quickly learn what Mainframes are, what they do, what runs on them, and terms and terminology you need to speak Mainframe-ese.But it's not all technical. There's also invaluable information on the people that work on Mainframes, Mainframe management issues, new Mainframe trends, and other facts that don't seem to be written down anywhere else.Programmers, managers, recruitment consultants, and industry commentators will all find this book their new best friend when trying to understand the Mainframe world.
IBM Mainframes
IBM Mainframes - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook IBM Mainframes write by Nallur S. Prasad. This book was released on 1994. IBM Mainframes available in PDF, EPUB and Kindle. The definitive reference for 360, 370, and 370/XA architecture, as well as design concepts for the 303X, 4381, 308X, 9370, and 3090 series. Updated to include the latest pertinent information on the new 370/ESA architecture, as well as the new Summit series.
Second Generation Mainframes
Second Generation Mainframes - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Second Generation Mainframes write by Stephen H. Kaisler. This book was released on 2019-06-04. Second Generation Mainframes available in PDF, EPUB and Kindle. Second Generation Mainframes: The IBM 7000 Series describes IBM’s second generation of mainframe computers which introduced new technology, new peripherals and advanced software. These systems were continuations of the instruction sets of the IBM 700 series with significant enhancements, but supported upwards compatibility that preserved customers’ investment in the earlier series. The use of magnetic cores, fast magnetic tapes and disks, and transistors yielded computation speeds that opened new domains for computation. Programming languages continued to be developed and enhanced, and new ones were developed for specific domains, such as SNOBOL, COBOL, and Macro Assemblers. Robust subroutine libraries for mathematical applications appeared. New operating systems provided many capabilities to programmers for data management and file systems, limited multiprocessing, timesharing, programming language support, and better error handling and control of peripherals. Early concepts in persistent file systems on magnetic disks were developed that changed the nature of job processing. The IBM 7000 series led the way in many innovative concepts that helped to establish IBM as the foremost manufacturer of computer systems. However, the diversity of the models put significant strain on IBM’s financial resources and development teams, which ultimately led to OBM’s development of the System/360 family of machines.
