A collection of math routines including 8-bit, 16-bit, 32-bit signed and unsigned addition, subtraction, multiplication, and division. Very nice code library with heavy in-line documentation! Been looking for multi-Byte divide? Here it is.
51串行令牌格式 a51編譯
Read data from serial port
and write into buffer DPTR pointed in XRAM if a data frame is
received and calculate the check sum
if a information frame is received return control Byte only
This a two node test, requires a Coordinator
and an RFD. The coordinator and node simply
ping-pong a packet back and forth, and print
out the RSSI Byte. The RFD waits before
bouncing it back, while the coordinator responds
immediately.
This unit uses an array of Bytes to represent a LARGE number. The number is binairy-stored in the array, with the Least Significant Byte (LSB) first and the Most Significant Byte (MSB) last, like all Intel-integer types.
What Does the code DO? Sometimes we may desire to hide our file contents from others.One of the possible way is encrypting these files.Here a simple encryption technique is used(In VB - The same technique can be implemented in "c" also.) Program flow Explained * Open the File to be encrypted for Binary Access Read(Say Source File) * Open a temparory file where encrypted data is stored for Binary Access Write(Say Destination File) * Loop through the Source File Byte by Byte * For each Byte read from the file, Complement the data. (Using Not operator (in C we have to use "~" operator) * Write Complemented Data to Destination File * Delete the Source File * Rename Destination file as Source File(Now Encryption is over)
