High Score Finding Programs Principles of Computer Composition 150

Go to the programmer's house and find out for yourself.

Convert x and y to binary numbers, and then normalize the binary numbers to get binary floating-point numbers.

Steps: x= y=+.

The last paragraph is the mantissa number. Plus on the front"1"It is.

The decimal point position is determined below. The order is 01111010, and adding 00000101 is 01111111 (127), so he subtracts the offset of 127 to get -5.

1. What are the two parts of a computer system? What does computer system performance depend on?

A computer system is made up of "hardware" and "software". The performance of a computer is determined by a number of technical indicators, including the various performance indicators of the hardware and the various functions of the software.

1) The computer system consists of two parts: hardware and software.

2) Computer system performance is determined by both hardware and software.

2. What are the five layers of the five-layer hierarchy of the computer system from bottom to top? Which are physical machines and which are virtual machines?

1) Microprogram machines, traditional machines, operating system machines, assembly language machines, high-level language machines.

2) Microprogram machines and traditional machines are physical machines, and the others are virtual machines.

3. What is translation in the structure of a computer system? What is Interpretation?

1) Translation: Translate all programs written in one language into another language and then execute them;

4. What is computer architecture? What is Computer Composition? Take the multiplication instruction as an example to illustrate the difference.

1) Computer architecture refers to the properties of a computer that can be seen by programmers. Such as instruction set, data type, etc.;

2) Computer composition refers to how to realize the attributes embodied in computer architecture;

3) Taking multiplication instructions as an example, whether a computer has multiplication instructions or not is a matter of architecture. Whether the multiplication instructions are composed of a dedicated multiplier or an adder and a shifter is a matter of computer composition.

5. What are the main features of the von Neumann machine?

1) The computer is composed of five parts: combinator, memory, controller, input device and output device;

2) instructions and data are stored in memory and can be accessed by address;

3) Instructions and data are represented in binary;

4) The instruction is composed of an opcode and an address code, the opcode indicates the nature of the operation, and the address code indicates the position of the operand in memory;

5) Instructions are stored in order in memory, and are usually taken out and executed in automatic order;

6) The machine is centered on the combinator, and the exchange of data between the IO device and the memory also passes through the combinator. (Hence the memory-centric computer architecture that came later).

Read in a minute. Principles of Computer Composition.

1. The low-byte address is used as the storage method of the word address, that is, the low-byte part of the word (tongue twister, heh) is stored in the low address of a word unit (two or four bytes, etc.) in memory.

2, the frequency is f = 1 500ns = 2000000, which is the number of memory visits per second, and then the bandwidth is.

f * 16 = 32m bit seconds. ("m" is in millions)3, in general, the number of mar digits is equal to the number of address lines. The MAR stores the address of the memory to be accessed, and it will be sent to the main memory through the address bus, and each address line corresponds to one bit of the MARs, so it is equal.

It seems that this is all, it would be good to read more books, I don't know it very clearly, I hope it helps.

40 kinds of instructions, 2 to the 5th power is 32, 32<40The smallest is not less than 40 to the power of 2 to the power of 64, and the power of 2 is to the 6th power. So encoding 40 instructions requires a 6-bit OP

The same, 4 bits 2 squared. 2 bits are required to encode 4 types of addressing.

64k "number" addresses, to the power of 2 to the 16th power. A 16-bit address is required. The machine word length indicates the storage length corresponding to each "number" of addresses. The length of the word here is indicated as 32 digits.

One register corresponds to one word. Access to memory is measured in words, with IR and PC registers and a word length.

There are 16 address lines, and the total buried address space of Xiangye Brother is 216=64k

Answer: 1) The total number of cylinders:

Effective storage area = (33-22) 2=

Number of cylinders: =40 cm*channels.

2) Total storage capacity:

Inner tract circumference = 22 * =

Channel capacity = 400 digits cm*

Surface capacity = 3454b * 220 channels = 759,880b Total capacity of the tray group = 759,880b * 12 = 9118560b

2.Hit rate = 998 1000

3.Relative addressable address: (pc)+a where the range of the transfer address depends on the number of bits of the relative address, so the range should be 256 near the pc target transfer address: 2000 + 2 + 2 = 2004

Hope it helps.