TAILIEUCHUNG - Hardware and Computer Organization- P2

Hardware and Computer Organization- P2:Today, we often take for granted the impressive array of computing machinery that surrounds us and helps us manage our daily lives. Because you are studying computer architecture and digital hardware, you no doubt have a good understanding of these machines, and you’ve probably written countless programs on your PCs and workstations. | Chapter 1 ever according to Mann a conversion factor of about 38 allows for a rough comparison. Thus according to the published results7 a GHz AMD Athlon processor achieved a SPECint95 benchmark result of which roughly compares to a SPECint92 result of 1630. The Digital Equipment Corporation DEC AlphaStation 5 300 is one workstation that has published results for both benchmark tests. It measures about 280 in the graph of Figure and according to the SPECint95 benchmark. Multiplying by 38 we get which is in reasonable agreement with the earlier result. We ll return to the issue of performance measurements in a later chapter. Number Systems How do you represent a number in computer How do you send that number whatever it may be a char an int a float or perhaps a double between the processor and memory or within the microprocessor itself This is a fair question to ask and the answer leads us naturally to an understanding of why modern digital computers are based on the binary base 2 number system. In order to investigate this consider Figure . In Figure we ll do a simple-minded experiment. Let s pretend that we can place an electrical voltage on the wire that represents the number we would like to transmit between two functional elements of the computer. The method might work for simple numbers but I wouldn t want to touch the wire if I was sending In fact this method would be extremely slow expensive and would only work for a narrow range of values. However that doesn t imply that this method isn t used at all. In fact one of the first families of electronic computers was the analog computer. The analog computer is based upon linear amplifiers or the kind of electronic circuitry that you might find in your stereo receiver at home. The key point is that variables in this case the voltages on wires Figure Representing the value of a number by the voltage on a wire. can assume an infinite range of values between some limits .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.