* Question What are the shift instructions? * Answer The shift operation includes the following six types, LSL, ASL, LSR, ASR, ROR, and RRX.Among them, ASL and LSL are equivalent and can be freely int ...
* Question What are the important parameters in serial communication? * Answer The most important parameters for serial communication are baud rate, data bits, stop bits, and parity. ...
* Question What are the main features of the ARM9E series of microprocessors? * Answer Support DSP instruction set, suitable for high-speed digital signal processing; 5-level integer pipeline, maximum ...
* Question What is NVRAM? * Answer NVRAM (non-volatile RAM) does not lose information after the power is turned off.This is different from most normal memory, which requires a constant power source to ...
* Question What is the driving force behind the development of power and power management technologies? * Answer The global energy-saving requirements and the mandatory performance-efficiency requirem ...
* Question What are the characteristics of the PCA82C250/251? * Answer (1) Fully compliant with IS0 11898; (2) High rate (suitable for CAN 5kb/s to 1Mb/s rate range); (3) With transient interference i ...
* Question What is the pyroeletric effect? * Answer Some crystals undergo polarization when the temperature changes.Heating the crystal evenly produces an equal amount of charge in some directions of ...
* Question The experience of NTT DoCoMo has quickly reached a consensus around the world. What are the main reasons? * Answer 1) High-value customers are mainly indoors, and 3G indoor coverage is very ...
* Question Ultra Low Noise Push-Pull Controller – What is the LTl 683 pin function? * Answer (1) V5 (5PIN): This terminal provides a 5V output, which can output lomA current or leakage of 10mA c ...
* Question What conditions should the CPU respond to interrupts? * Answer (1) An interrupt source issues an interrupt request; (2) The interrupt enable bit EA=1, that is, the CPU open interrupt; (3) T ...