(i) a basic conceptdecibel (db): a amplitude unit defined by a logarithm. For voltage values, the db is given in 20log (VA/VB) and for the power value, given in 10log (PA/PB). DBC is a DB value relative to a carrier signal, and dbm is a DB value
%1 $ s indicates that the first replacement location is placed as a string type such as System.out.println (String.Format ("%1 $ s Hello%2$s", "XXX", "!")); The output is "XXX Hello!" String.Format after the first argument is an expression, can be
MCU is a typical digital system, digital system can only be a digital signal processing input, its output signal is also digital. However, many quantities in industry or life are analog, which can be converted to the corresponding voltage, current
In Sun's Java JDK 1.40, Java comes with a package that supports regular expressions. This article introduces how to use the java. util. RegEx package.
It can be roughly estimated that, except for the occasional use of Linux, other linu X users will
In Sun's Java JDK 1.40, Java comes with a package that supports regular expressions. This article introduces how to use the java. util. RegEx package.
It can be roughly estimated that, except for the occasional use of Linux, other linu X users will
E1 introduction:
① An E1 is a 2.048m link, which is PCM encoded. ② The frame length of an E1 is 256 bits, which are divided into 32 time slots and 8 bit for a single time slot. ③ 8 K E1 frames per second pass through the interface, that is, 8 K * 256
From the system and macro perspectives, after the application layer is stripped off, the work completed by the GPS receiver can be divided into three parts: signal measurement, data receiving, and geometric calculus.
Receiving data refers to
Monitoring variables (watching Variables)What does the user do when the program stops at a breakpoint? Usually the user stops at the breakpoint to check the value of the variable, is the value of a variable the same as the expected value? Or what
Interchange Between Binary Gray Codes and natural binary codesYouzhiyu, Institute of optoelectronic technology, Chinese Emy of SciencesDownload Sample projectIn the precise positioning control system, it is very important to accurately measure and
video memory, also called frame cache, is used to store video cards Chipprocessed or about to be extracted. renders the data. Like computer memory, video memory is used to store The part of the graphic information to process. RoleVideo MemoryLike
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