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SUBB A, Rn SUBB A, direct SUBB A, @Ri SUBB A, #data Set (each H, (R2) = 55H, CY = 1, after executing instruction SUBB A, R2, the value in A is 73H. Note: There is no microcontroller subtrac...[Details]
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——When production designs involve fast signals and time is of the essence, it is important for engineers to have accurate instruments and good troubleshooting tools. To meet this challenge, oscillo...[Details]
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ATmega128 has an on-chip BOD (Brown-out Detection) circuit that detects changes in VCC during operation by comparing it with a fixed trigger level. This trigger level can be set to 2.7V (BODLEVEL not...[Details]
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The power output of this 2x10W audio amplifier circuit will be 10 Watts on each channel with a 4 Ohm speaker resistance. The required supply voltage for this circuit is 8 – 24V DC and the current i...[Details]
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Here I use the CEPARK M64 AVR development board. The focus of this lesson is to learn how to use 74HC595 to drive digital tubes.
74HC595 is an 8-bit shift register and a memory with three-state outpu...[Details]
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Apple’s top chip executive revealed the company has begun making its own cellular modems for future devices, a move that will replace Qualcomm’s components, Bloomberg reported on December 11. J...[Details]
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//0~200 counter, schematic diagram LEDshow/4.sch
#include reg52.h
#include math.h
void show(unsigned char x,unsigned char n);
void delay(unsigned int x);
unsigned char tab ={0xc0,0xf9,0xa4,0xb0,0...[Details]
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err_code = sd_ble_uuid_vs_add(&base_uuid, &p_led- uuid_type); softdevice_handler.c–softdevice_enable_get_default_config() Reason 1: Insufficient quantity Increase the number of uuid_count p_ble_e...[Details]
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With the rapid development of computer and automatic control technology, agricultural machinery will enter a period of high automation and intelligence. The application of berry picking robots can imp...[Details]
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The default working main frequency of S3C2440 is 12MHz and 16.9344MHz, which is the frequency of our crystal oscillator. However, 12MHz crystal oscillator is more commonly used. Fin refers to the freq...[Details]
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The "single point" wall-mounted gas detection alarm is a common type of gas alarm. The shell is made of polycarbonate material and composite elastic rubber material. It has high strength, heat resista...[Details]
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1 Overview
With the development of single-chip microcomputer technology and the improvement of control technology, 16-bit single-chip microcomputers have been widely used in industrial and civ...[Details]
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According to The Investor, memory chip giant SK Hynix is slowing down production at its factories in China due to growing concerns about the negative impact of the escalating Sino-US trade war. ...[Details]
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Instead of making things easier, the law requires that cars be equipped with a hazard light button that flashes the warning lights when pressed. Instead, it presents both opportunities and challenges...[Details]
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Abstract: A design method for a high-performance DC-AC digital sinusoidal inverter is proposed. SG3525A and AVR series single-chip microcomputer AT90PWM2 are used as controllers for design. SG3525A...[Details]
DIY/Open Source Hardware
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