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Data Types and Data Storage
Published in Julio Sanchez, Maria P. Canton, Microcontroller Programming, 2018
Julio Sanchez, Maria P. Canton
Historically, the methods used to represent characters have varied widely, but the basic approach has always been to choose a fixed number of bits and then map the various bit combinations to the various characters. Clearly, the number of bits of the storage format limits the total number of distinct characters that can be represented. In this manner, the 6-bit codes used on a number of earlier computing machines allow representing 64 characters. This range allows including the uppercase letters, the decimal digits, some special characters, but not the lowercase letters. Computer manufacturers that used the 6-bit format often argued that their customers had no need for lower-case letters. Nowadays 7- and 8-bit codes that allow representing the lower-case letters have been adopted almost universally.
Introduction
Published in Randall L. Eubank, Ana Kupresanin, Statistical Computing in C++ and R, 2011
Randall L. Eubank, Ana Kupresanin
A string is an ordered collection of character variables that occupy a contiguous region of memory; that is, a string is basically an array whose elements are all character variables. There are essentially three ways to deal with a string in C++: directly as an array of characters, as a C-style string and using the C++ string class. The array and C-style string approaches are essentially the same except that C-style strings have a null character ∖0 as their last element. The C++ string class provides a simpler way of dealing with strings than the array perspective and, accordingly, we will progress along that route.
Log Sensor Data to Google Spreadsheets
Published in Anudeep Juluru, Shriram K. Vasudevan, T. S. Murugesh, fied!, 2023
Anudeep Juluru, Shriram K. Vasudevan, T. S. Murugesh
The first argument in the , is a regular expression (also known as RegEx or RegExr). Regular expressions are patterns used to match character combinations in a string. Go to these websites (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions, https://regexr.com/) to know more about regular expressions, for creating a new regular expression or for the explanation of a known regular expression. The regular expression used in the code is explained below: – Start of the regular expression – Start of the character set – Matches character – Matches character – End of character set – End of the regular expression – Global Expression flag. It is used to find all the matches (not just the first one).
A MCVRP-based model for PCB assembly optimisation on the beam-type placement machine
Published in International Journal of Production Research, 2019
Shujuan Guo, Fei Geng, Katsuhiko Takahashi, Xiaohan Wang, Zhihong Jin
When a pickup is considered as a string, combining two pickups is the problem to find out the maximum matching characters between pickup and in order to maximise the SP. In computer science, a string is an ordered list of characters written contiguously from left to right. The maximum matching characters contain the maximum number of matching characters between the two strings by searching all of the aligned positions. The corresponding positions with the maximum matching characters are recorded in the form of pickups denoted as and for pickup and respectively. For example, in Figure 2, represent the positions of the retrieved pickup, andrepresent the head positions of picking pickup in pick step 1.
Implementation of security module to protect programme theft in microcontroller-based applications
Published in Automatika, 2019
P. Muthu Subramanian, A. Rajeswari
STEP III: Final stage of the algorithm; here the character is substituted with special symbols which provides more authentication hence it becomes more secured. ASCII values are assigned to each and every character. Table 2 shows ASCII values and assigned alphabets. This substitution makes the text more authenticated and unreadable.