binary - Why does a byte only have 0 to 255? - Stack Overflow
Feb 13, 2011 · A byte has only 8 bits. A bit is a binary digit. So a byte can hold 2 (binary) ^ 8 numbers ranging from 0 to 2^8-1 = 255. It's the same as asking why a 3 digit decimal number …
SQL function to convert ulid stored as VARCHAR(255) to binary(16)
Oct 28, 2024 · Add id_bin column of type BINARY(16) to each table. Copy id values to this new id_bin column while transforming them to binary. Drop the main Primary Key and add a new …
converting signed 255 into 8-bit twos complement
Aug 24, 2013 · I need to convert a signed decimal number (255) into 8-bit two's complement for a HW problem. My problem is that I'm not sure how to make a number like 255 positive with 8 …
Calculating bits required to store decimal number
Dec 21, 2022 · The formula for the number of binary bits required to store n integers (for example, 0 to n - 1) is: log e (n) / log e (2) and round up. For example, for values -128 to 127 (signed …
Determine the network and host ID portion of an IP address
Dec 28, 2011 · IP Address 192.168.255.22, NetMask 255.255.224.0. The network portion of this address is 192.168.224.0 and the host portion of the address is 0.0.31.22. I intentionally chose …
Converting an OpenCV Image to Black and White - Stack Overflow
Pay attention, if you use cv.CV_THRESH_BINARY means every pixel greater than threshold becomes the maxValue (in your case 255), otherwise the value is 0. Obviously if your …
Why do we always divide RGB values by 255? - Stack Overflow
The RGB value goes up from 0 to 255 because it takes up exactly one byte of data. One byte is equal to 8 bits, and each bit represents either a 0 or a 1. This makes 0 in 8 bit binary: …
How to set "BINARY" to VARCHAR column definition for ... - Stack …
Aug 30, 2016 · CREATE TABLE `webapp_itemattr` ( `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `name` varchar(255) BINARY NOT NULL, `value` varchar(255) NOT NULL ) …
c++ - Difference between adaptive thresholding and normal …
Aug 17, 2015 · The function transforms a grayscale image to a binary image according to the formulas: THRESH_BINARY THRESH_BINARY_INV where T(x,y) is a threshold calculated …
binary - Can I present numbers from numbers from 0 to 255 in …
Feb 4, 2019 · I know that it takes 8 bits to demonstrate a number like 255 in binary system. I'm desperately looking for a way of storing numbers from 0 to 255 (especially from 90 to 255) in …