bits

问题 I am trying to solve a challenge on this site. I have everything correct except I can't properly convert a bitstring to its 32-bit signed integer representation. For example I have this bitstring: block = '10101010001000101110101000101110' My own way of converting this bitstring to 32-bit signed integer: I partially remember from school that first bit is the sign bit. If it is 1 we have negative number and vice versa. when I do this, it gives me the number in base 10. It just converts it to

问题 I'm trying to use only AND OR XOR and NOT to determine whether adding 2 binary number made of 4 bits will overflow. I know, for example, that something like 1100 + 0100 will wind up as 1 | 0000. But how can I find this using just these logical operators? I'm trying to get 1000 when overflow happens, and 0000 when it doesn't. This is easy enough since I can just use XOR with a mask to clear the last 3 bits. Does anyone have suggestions for figuring this out? 回答1: Numbers are ABCD and EFGH, ^

问题 The last word of a MIDI header chunk specifies the division. It contains information about whether delta times should be interpreted as ticks per quarter note or ticks per frame (where frame is a subdivision of a second). If bit 15 of this word is set then information is in ticks per frame. Next 7 bits (bit 14 through bit 8) specify the amount of frames per second and can contain one of four values: -24, -25, -29, or -30. (they are negative) Does anyone know whether the bit 15 counts towards

问题 Is it determined by size of the address buss; if yes then was 8086 a 20-bit processor? If no what is criteria for assigning a bit number like 8-bit, 16-bit, 32-bit to processor? 回答1: It's not well defined. Broadly, as xtofl points out, it's the size of the atomic unit of computation (in early computers, this wasn't always synonymous with "register"). So the PDP-10 was a 36 bit machine, a 8080 was 8 bit, and a IBM 360 or Intel 80386 is "32 bits". But there are exceptions. The Motorola 68000

问题 Is it determined by size of the address buss; if yes then was 8086 a 20-bit processor? If no what is criteria for assigning a bit number like 8-bit, 16-bit, 32-bit to processor? 回答1: It's not well defined. Broadly, as xtofl points out, it's the size of the atomic unit of computation (in early computers, this wasn't always synonymous with "register"). So the PDP-10 was a 36 bit machine, a 8080 was 8 bit, and a IBM 360 or Intel 80386 is "32 bits". But there are exceptions. The Motorola 68000

问题 Is it determined by size of the address buss; if yes then was 8086 a 20-bit processor? If no what is criteria for assigning a bit number like 8-bit, 16-bit, 32-bit to processor? 回答1: It's not well defined. Broadly, as xtofl points out, it's the size of the atomic unit of computation (in early computers, this wasn't always synonymous with "register"). So the PDP-10 was a 36 bit machine, a 8080 was 8 bit, and a IBM 360 or Intel 80386 is "32 bits". But there are exceptions. The Motorola 68000

问题 I'm trying to use only AND OR XOR and NOT to determine whether adding 2 binary number made of 4 bits will overflow. I know, for example, that something like 1100 + 0100 will wind up as 1 | 0000. But how can I find this using just these logical operators? I'm trying to get 1000 when overflow happens, and 0000 when it doesn't. This is easy enough since I can just use XOR with a mask to clear the last 3 bits. Does anyone have suggestions for figuring this out? 回答1: Numbers are ABCD and EFGH, ^

问题 Well I can find many big integer libraries but they are for all programming languages except VB.NET. Does anyone know a class/library for Visual Basic .NET which can handle very big numbers? (I'd like to handle 1024 or even more bits). The only calculation support I need it addition, substitution, multiplication, division and rounding. It's ment to be used with this code: Dim Letterz() As Integer = {33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56

问题 Well I can find many big integer libraries but they are for all programming languages except VB.NET. Does anyone know a class/library for Visual Basic .NET which can handle very big numbers? (I'd like to handle 1024 or even more bits). The only calculation support I need it addition, substitution, multiplication, division and rounding. It's ment to be used with this code: Dim Letterz() As Integer = {33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56

问题 Well I can find many big integer libraries but they are for all programming languages except VB.NET. Does anyone know a class/library for Visual Basic .NET which can handle very big numbers? (I'd like to handle 1024 or even more bits). The only calculation support I need it addition, substitution, multiplication, division and rounding. It's ment to be used with this code: Dim Letterz() As Integer = {33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56