ptp clock

The clock is the most important and special signal of the entire circuit. Most devices in the system are operated on the hop-on-line of the clock, which requires that the delay deviation of the clock signal be very small, otherwise, the timing logic status may be wrong. Therefore, it is very important to clarify the factors that determine the system

The Android setting alarm clock is not as simple as iOS, and developers who have made the Android alarm clock know how deep the hole is. Here's a note of my solution to the Android alarm set.Major problems1, API19 began to alarmmanager mechanism changes.2, the application is killed, set the alarm clock does not ring.3, more than 6.0 into the doze mode will make J

CPU clock speed, that is, the clock frequency (cpuClock speed ). In general, the CPU is as high as, And the is the "CPU clock speed ". Many people think that the CPU clock speed is its running speed. The clock speed of the CPU indicates the speed at which the digital pulse s

1.3 Types of input methods for object design clocks (heavy duty)Package Com.lovo;import java.text.decimalformat;import java.util.calendar;/** * Clock class * @author Abe * *//** * attribute, hours, minutes, seconds * * @author Abe * */public class Clock {private int hour;private int min;private int sec;/** * Constructor 1 Direct input */public Clock (in T hour, i

Overview More canvas instances can be seen on GitHub, with occasional updates: Https://github.com/xiangshuo1992/canvas-demo After learning the teacher's course, I realized it again and wrote an object-oriented version.Canvas clock effects-function programmingCanvas clock Effects-object-oriented version The effect of this article can be seen directly codepen effect see the Pen amp;lt;a href=quot;https://cod

First, SOC (Systern on chip system-level chip) clock system introduction 1.1 What clock. Why does the SOC need clocks (1) The clock is the synchronized beat of the synchronous working system. (2) There are many devices inside the SOC, such as CPU, serial port, DRAM controller, GPIO and other internal peripherals, these things to work with each other, need a synch

Article Title: linux tips -- set the clock and time. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Introduction: This document explains how to set a computer clock in linux, how to set your time zone, and other materials related to how linux saves time. Your computer h

This document explains how to set a computer clock in Linux, how to set your time zone, and other materials related to how Linux saves time. Your computer has two clocks. One is a always-running, battery (hardware, bios, or CMOS) clock, the other is the (system) Clock maintained by the operating system running on your computer. The hardware

One: Preface The clock is the pulse of the whole operating system, which provides the basis for the process scheduling and timing events. In addition, many of the operations of user space depend on clocks, such as select.poll,make. Operating System Management time is divided into two types, one called the current time, That's the time we spend in our daily life. This time is generally stored in CMOS. The motherboard has a specific chip to provide tim

1, we search the WIN10 search box after the "alarm clock" to find us as shown in the picture click "Alarm clock and clock" into; 2, after the opening of the interface as shown below: 3, in the entry to the alarm clock interface We do not have the alarm clock cl

Development environment: Delphi 7Development name: Clock componentDevelopment note: The clock can switch pointer style and digital style, you can set the time, minutes, seconds and the value of the display color, can be opened and paused, you can set the display size. Recently in the study of Delphi, in different ways to embody the process of learning, just began to draw the

This post was transferred from: http://www.cnblogs.com/jamesnt/p/3535073.htmlExperiments done on Xilinx ZC7020 's films;ConclusionThe normal IO cannot be used as the clock input of the PLL, the dedicated clock pin can be;The normal IO can be connected to the clock input of the PLL via the BUFG, but to modify the PLL settings input CLK option to select "No Buffer"

The first time to write a blog, this is the first time to dedicate to my dear MFC ~ As an MFC beginner, I know that you are a beginner classmate friends are not easy, on-line about from the MFC 0 Foundation to explain the MFC books are not many, here on my practice of this small program as far as possible to do the detailed explanation, Please the Friends of the students a lot of guidance, learn from each other, master do not spray ~ The final applet runs as shown in the figure below (the mathem

First, the difference between NTPD and ntpdate:Excerpt from: The difference between ntpd and ntpdate-baccarat-Blog Park http://www.cnblogs.com/liuyou/archive/2012/07/29/2614330.html1. Difference: NTPD is the time to adjust, Calibration of the time 1.1 points, and finally the time to correct the right; Ntpdate is the calibration time, that is, the direct adjustment time, does not consider other programs, the direct result is the clock jump.　 　2. Conseq

void Rcc_deinit (void){RCC-GT;CR |= (uint32_t) 0x00000001; Turn on the internal 8MHz clock#ifndef STM32F10X_CL//stm32f10x_cl refers to the STM32 Interconnect series microprocessorRcc->cfgr = (uint32_t) 0xf8ff0000; 27-31 bits in the CFGR register of other types of processors are reserved bits and 24-26 are MCO bits#else//And the CFGR register of the interconnected processor, 28-31 bits are reserved bits and 24-27 are MCORcc->cfgr = (uint32_t) 0xf0ff000

clock cycle: The clock cycle, also known as the oscillation period, is defined as the reciprocal of the clock pulse (it can be understood that the clock cycle is the inverse of the monolithic microcomputer external crystal oscillator, such as the crystal oscillator 12M, its time period is 1/12 us), is the most basic, t

Introduction to STM32 clock library function RCC_DeInit, stm32rcc_deinitVoid RCC_DeInit (void){RCC-> CR | = (uint32_t) 0x00000001; // enable the internal 8 MHz clock# Ifndef STM32F10X_CL // STM32F10X_CL indicates the STM32 interconnected series microprocessor.RCC-> CFGR = (uint32_t) 0xF8FF0000; // The 27-31 bits in the CFGR register of Other Processors are reserved bits, and the 24-26 bits are MCO bits.# E

In electronic technology, the pulse signal is a pulse signal continuously sent at a certain voltage range and at a certain interval. The interval between pulses is called a cycle, and the number of pulses generated per unit time (for example, 1 second) is called a frequency. Frequency is the metering name that describes the number of pulses that appear in a periodic cycle signal (including a pulse signal) per unit time. The standard unit of measurement for a frequency is Hz ). The system