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You're reading from  Modern Computer Architecture and Organization – Second Edition - Second Edition

Product typeBook
Published inMay 2022
PublisherPackt
ISBN-139781803234519
Edition2nd Edition
Concepts
Computer Architecture
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Author (1)
Jim Ledin
Jim Ledin
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Jim Ledin

Jim Ledin is the CEO of Ledin Engineering, Inc. Jim is an expert in embedded software and hardware design and testing. He is also an expert in system cybersecurity assessment and penetration testing. He has a B.S. degree in aerospace engineering from Iowa State University and an M.S. degree in electrical and computer engineering from the Georgia Institute of Technology. Jim is a registered professional electrical engineer in California, a Certified Information System Security Professional (CISSP), a Certified Ethical Hacker (CEH), and a Certified Penetration Tester (CPT).
Read more about Jim Ledin

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BIOS

A computer’s BIOS contains code that first executes at system startup. In the early days of personal computers, the BIOS provided a set of programming interfaces that abstracted the details of peripheral interfaces such as keyboards and video displays.

In modern PCs, the BIOS performs system testing and peripheral device configuration during startup. After that process has been completed, the processor (under software control) interacts with peripheral devices directly without further intervention by the BIOS.

Early PCs stored the BIOS code in a read-only memory (ROM) chip on the motherboard. This code was permanently programmed and could not be altered. Modern motherboards generally store the motherboard BIOS in a reprogrammable flash memory device. This allows BIOS updates to be installed to add new features or to fix problems found in earlier firmware versions. The process of updating the BIOS is commonly known as flashing the BIOS.

One downside of BIOS...

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Modern Computer Architecture and Organization – Second Edition - Second Edition
Published in: May 2022Publisher: PacktISBN-13: 9781803234519
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Jim Ledin

Jim Ledin is the CEO of Ledin Engineering, Inc. Jim is an expert in embedded software and hardware design and testing. He is also an expert in system cybersecurity assessment and penetration testing. He has a B.S. degree in aerospace engineering from Iowa State University and an M.S. degree in electrical and computer engineering from the Georgia Institute of Technology. Jim is a registered professional electrical engineer in California, a Certified Information System Security Professional (CISSP), a Certified Ethical Hacker (CEH), and a Certified Penetration Tester (CPT).
Read more about Jim Ledin

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