clock with nanoseconds

The stm32 chip manual shows clearly that there are four clock sources: 1. HSI (Internal High-Speed clock 8 MHz) provides a clock source that supports BIT system clock 2. HSE (external high-speed clock) provides system clock and RT

Basic Concepts UNIX time: Or POSIX time is the time representation used by Unix or Unix-like systems: from Coordinated Universal TimeJanuary 1, 1970 00:00:00The total number of seconds from now on, excluding leap seconds. Clock: In the counting system, all waveforms are synchronized with a basic time series, which is called a clock ).The clock is a periodic wave,

From: http://blog.chinaunix.net/uid-22917448-id-1765503.html Audio ClockingAudio clock==================== This text describes the audio clocking terms in ASoC and digital audio inGeneral. Note: Audio clocking can be complex!This document describes the ASoC and audio clock terms in digital audio. Master ClockMaster Clock------------ Every audio subsystem is driv

Function Description: Displays and sets the hardware clock.Syntax: Hwclock [--adjust][--debug][--directisa][--hctosys][--show][--systohc][--test][--UTC] [--version] [--set--date=Added: There are two clocks such as hardware clock and system clock in Linux. The hardware clock is the clock device on the motherboard, which

From: http://student.csdn.net/space.php? Uid = 91306 Do = Blog id = 14644 The clock part is relatively easy. Now let's sort it out based on the datasheet idea.I. basic understanding of clock the seventh part is "clock Power Management". The summary is as follows: 1. The clock Power Management Module of S3C2410 con

STM32 A total of five clock sources, namely: HSI is a high-speed internal clock, rc oscillator, the frequency of 8MHz; HSE is a high-speed external clock with a frequency range of 4~6mhz; (can connect quartz/ceramic resonator or external clock source) LSI is low speed internal

Clocks are the most common in life, but it takes a certain amount of thought and time to make them, so take a look at this tutorial. Clocks are the most common in life, but it takes a certain amount of thought and time to make them. The following tutorial will describe how to make a clock. The author is very meticulous, basically every step has a detailed description, like a friend can try. Final effect 1, New document: 2304 * 1708 px, resolution:

This paper interprets the SHARC clock systemclkin: Clock input. pre-divider: Front dividerPost-divider: Rear dividerCCLK: Kernel clockPCLK: Peripheral ClockRegister Overview Power Management Control Register (pmctl). Governs the operationof the PLL and configures the PLL settings.Power Management Control Register 1 (PMCTL1). This register controls the various peripheral ' s clocks.Clock Control: Programmabl

Number 16th ... April 16. April 16, 1960 three o'clock in the afternoon a minute before you are with me, because of you I will remember this minute. From now on we are a minute friend, it is the fact that you can not change, because it has passed. I'll come back tomorrow. --The story of a punk Time in real life is a very important concept, time can record the time when things happen, compare the sequence of things happening. Some scenarios of distributed systems also need to record and

2nd Week Programming QuestionsView Helpreturn2nd week programming, modified on the basis of the clock program given by the courseIn accordance with the terms of academic integrity, I guarantee that this work is done independently.Warm tips:1. This assignment belongs to the online Judge topic and is enigmatic grading by the system immediately after submission.2. Students can submit an unlimited number of answers before the deadline , and the system wil

Jason's scribble OAL system clock 1. Relationship between system clock and Kernel Wince 5.0 uses the Real-Time Kernel of preemptible multitasking Based on Time slices, and each thread can set the size of the thread time slice as needed (refer to the cesetthreadquantum function). The default value is 100 ms, the default value dwdefathreadthreadquantum can also be set at oeminit. In the kernel source file, v

Clock cycle The clock cycle is also called the oscillation cycle, which is defined as the reciprocal of the clock pulse (it can be understood that the clock cycle is the reciprocal of the single-chip microcomputer external crystal oscillator, such as the 12 m crystal oscillator, its time cycle is 1/12Is the most basic

When there are coding in Linux and winows, there are some problems when porting code.1. Are you allowed to do this? About clock () timing functionsThe first is a simple test code that reads the data from a text file and assigns a value to the run time of the last printout of the vector.int main (int argc, char **argv){clock_t T1=clock ();Ifstream in ("Data.txt");Vectorfor (int a;in>>a;v.push_back (a));Coutf