I'm going to send you an ugly clock today, honestly.
There is no debugging canvas tools, always in the browser to refresh the viewing effect, so tired ah ~(┬_┬)
Code:
This clock is not focused on how to draw, in trigonometric functions, the use of trigonometric function is closely related to the angle, Math.PI is Π,math.sin (), Math.Cos () They are accepted radians, so to
To convert the angle
Another clock effect, this implementation does not need canvas, are Div, UL, Li painted, fun has real.
haha ~
The need for JS to achieve the effect of moving around, but the content of JS is not much, it is not difficult.is mainly a CSS transform in the use of ideas, transform there are many changes in properties, and the ordinary clockIn my heart is a circle of things, then it is not possible to rotate this property (rotate) to achieve, its scaleUs
I. Clock
1. Three different clock sources can be used to drive the system clock (sysclk ):
. HSI oscillator clock high speed internal
. HSE oscillator clock high speed external
. PLL Clock Phase Locked Loop
2. These devices have t
set and a subset. We can use a number to indicate the elements in a subset, and use this number as an index to find the result set generated after the set operation.[Cpp]# Include # Include # Include Using namespace std;# Define N 4 // 4 cards, variable# Define RES 24 // The calculation result is 24, variable# Define EPS 1e-6Struct Elem{Elem (double r, string I): res (r), info (I ){}Elem (double r, char * I): res (r), info (I ){}Double res; // the c
Original Address http://www.dzsc.com/data/html/2011-1-17/88338.html1 IntroductionIn distributed systems, a global time is often needed to determine the sequence of events in the system, to coordinate the transmission of various messages, and to control and monitor the state of the system. It is necessary to unify the local time of each part in the system and clock synchronization. With the widespread application of distributed simulation system and te
1. Clock resource Overview
The clock facility provides a series of low-capacitance, low-jitter Interconnect Lines that are ideal for transmitting high-frequency signals and minimizing clock jitter. These connection resources can be connected to DCM, PLL, and so on.
Each Spartan-6 Chip provides 16 high-speed, low-jitter global
1. Clock source
Three different clock sources can do the system clock (SYSCLK):HSI oscillator Clock: high-speed internal clockHSE oscillator Clock: high-speed external clockPLL ClockTwo x two-level clocksLSI (Low speed internal
Tags: assignment suspend use ROC equals create principle Register oneFirst, prefaceClock is the basis of a timer, and any timer needs to work on a given clock. The kernel maintains a number of clock, the second chapter of this article describes the basic concept of clock and some statically defined POSIX clock. Accordi
The clock plugin is often used on Web pages, especially in personal blogs, and a personalized clock plugin not only makes the page look beautiful, but also allows visitors to see the current date and time. Today we have collected 15 super-powerful disk clock animation, many are based on CSS3, but also a part of the use of jquery and SVG, let's take a look at it.1
The original Article portal has five clock sources in stm32: Hsi, HSE, LSI, LSE, and PLL.
There are actually four clock sources, as shown in (gray-blue). The PLL is generated by the frequency doubling of the PLL circuit.① HSI is a high-speed internal clock, RC oscillator, with a frequency of 8 MHz. ② HSE is a high-speed external
Crazy Bingolearn to walk first before your want to run ... Discussion on the factors affecting the clock in FPGA designHttp://www.fpga.com.cn/advance/skill/speed.htmHttp://www.fpga.com.cn/advance/skill/design_skill3.htmThe clock is the most important and special signal of the whole circuit, the movement of most of the devices in the system is on the hopping edge of the
In STM32, there are five clock sources for HSI, HSE, LSI, LSE, PLL.In fact, four clock sources, as shown (gray-blue), PLL is a PLL clock that is multiplied by a phase-locked loop circuit. ①, HSI is a high-speed internal clock, RC oscillator, frequency of 8MHz. ②, HSE is a high-speed external
Crystal oscillator and Clock
The cc2530 has an internal system clock, or a master clock. The system clock Source is a 16Mhz rc crystal oscillator or 32MHz crystal oscillator. The clock can be controlled using the Clkconcmd special function register.
In addition, the chip als
In the previous section of the discussion, we have been based on the assumption that the clock events in Linux are provided by a cycle clock, regardless of whether the clock_event_device in the system is working in a cycle-triggered mode or in a single-trigger mode, regardless of whether the timer system is operating in a low-resolution mode, or high-precision mode, the kernel does its best to provide cycle
1. In stm32, there are five clock sources:HSI,HSE,LSI,LSE,PLL.
①HSIIt is a high-speed internal clock, RC oscillator, and the frequency is 8 MHz.
②HSEIt is a high-speed external clock, which can be connected to a Z/Ceramic Resonator or an external clock source. The frequency range is 4 MHz ~ 16 MHz. Generally, it is con
The arm arch in kernel-2.6.22 has added support for dynticks, clocksource/event. We have found some recent changes to the kernel clock and timer subsystems.Generally, soft-timer (timer wheel/hrtimer) is composed of hardware-timer (such as clock interruption) and related clock source (E. g GPT in SOC) driver, so I plan to start from the
14 superb HTML5 clock animations,
Clock animation is also widely used in Web pages. In some personal blogs, we often see some quite personalized HTML5 clock animations. Today, we share with you 14 ultra-fashion HTML5 clock animations in different forms, including disc clock,
First, background:Recently, a project has been taken over, the core chip is both the LPC17XX series MCU, core arm of the COTEX-M3 core.If you want to play with an MCU, you have to take care of its clock!The clock is to the MCU, like the human heart. It gives the AHB, APB Bus The blood (clock frequency), and the devices that hang on the AHB (Advance High bus) bus
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