pomodoro clock

There are four clock sources in 9200: Slow clock (SLK) Main clock) PLLA, pllb There is a difference between the master clock and the host clock. The main clock refers to the clock of t

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. ③LSIIt is a low-s

1. System interruption and clock cycle 1.1 system interruption Interrupt is a hardware mechanism that notifies the CPU Of an asynchronous event. Once the interrupt is identified by the system, the CPU stores partial (or all) context values, that is, the values of some (or all) registers, and jumps to a special subroutine, it is called the interrupt service subroutine (ISR ). Interrupt Service subprograms are used to process events. After processing i

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:

Android Phone small Alarm ClockIn daily life work, there are often important things or schedules, and the alarm clock, as a tool to remind people, becomes an indispensable part of many people's lives.The software includes the functions of alarm settings, alarm clock creation, alarm clock off and other modules. The use of this application is simple, easy to learn

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

From the perspective of clock source, there are two types of external clock (E) and internal clock (I ).From the perspective of clock rate, there are two types of high-speed clock (HS) and low-speed clock (LS ).In combination, the

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 MSDN, the check for the clock function is defined as follows:clock_t clock (void);Returns the time that the program consumes the CPU from startup to function calls. This function returns the number of CPU clock ticks (clock ticks) from "Open this program process" to "call clock