Consider a virtual memory system that can address a total of 250 bytes. You have unlimited hard drive space, but are limited to 2 GB of semiconductor (physical) memory. Assume that virtual and physical pages are each 4 KB in size. (a) How many bits is the physical address

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Answer 1

The physical address is composed of two parts: the physical page number and the offset within the page. The number of bits required for the offset can be determined by the page size. It will be 30 bits.

Each physical page is 4 KB in size, which is equal to 2¹² bytes. Therefore, we need 12 bits to represent the offset within the page.

Hence, the physical address consists of 18 bits for the physical page number and 12 bits for the offset, resulting in a total of 30 bits. Virtual memory is a memory management technique used by modern computer operating systems to provide an illusion of a larger address space than the physical memory available.

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During the early years of the silicon valley, what were some unique qualities of the environments in the start up computer companies?

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During the early years of the Silicon Valley, some unique qualities of the environments in start-up computer companies included a collaborative and innovative culture, a focus on technological advancements, a high level of risk-taking.

The early years of the Silicon Valley, particularly in the 1960s and 1970s, witnessed the emergence of start-up computer companies that laid the foundation for the tech industry as we know it today. One unique quality of these environments was the collaborative and innovative culture fostered within the companies.

Employees often worked closely together, sharing ideas and expertise, which led to rapid technological advancements and breakthroughs. Another characteristic was the focus on technological advancements. Start-ups in Silicon Valley were driven by a strong emphasis on developing cutting-edge technologies and creating innovative products. This focus attracted top talent and resulted in the development of groundbreaking technologies such as microprocessors, personal computers, and networking systems. Founders and employees were willing to take risks, invest their time and resources in new ventures, and challenge the status quo. This risk-taking culture played a significant role in the success and growth of these start-up companies. This proximity facilitated collaboration and knowledge sharing between academia and industry, further fueling innovation and growth in the start-up ecosystem of Silicon Valley.

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