summary:
With the continuous development of mobile communication networks, operators have different frequency band resources, including high, medium and low frequency bands. Radio frequency band resou...
[i=s]This post was last edited by paulhyde on 2014-9-15 03:32[/i] :kiss: There is a smart car competition at school now. I wanted to weld a car frame myself, but considering the workload is too much, ...
[table] [tr][td]My project has two tasks, one is a periodic task, and the other is a triggered task. The triggered task has a higher priority. After executing the OSSemPend() function, the low-priorit...
[i=s] This post was last edited by 90houyidai on 2014-10-20 20:38 [/i] The program cannot be debugged, and it seems that there is a problem with the button. The board is printed with: user1 —— PD1 use...
Some transformers have air gaps to prevent magnetic saturation during operation. The role of the air gap is to increase the temperature of the magnetic core and the stability of the magnetic field. In...
Set the buffer alignment mask Devices that perform DMA transfers work directly with data buffers in memory. The HAL requires that buffers used in DMA transfers must be aligned to a certain boundary, a...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
Abstract: In order to generate a stable excitation signal, the design of a digital frequency synthesizer is implemented on FPGA using Verilog hardware language. The design includes accumulator, wav...[Details]
AD8205 is
a single-supply high-performance differential
amplifier
launched by
Analog
Devices of the United States
. The typical single-supply voltage is 5V, and its common-mode volta...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
This controller uses PIC16C54 single-chip microcomputer as the controller, and it is very easy to use: just connect a telephone line to the loudspeaker through the controller, and you can rem...[Details]
Among the many members of the single-chip microcomputer family, the MCS-51 series of single-chip microcomputers has occupied the main market of industrial measurement and control and automation eng...[Details]
From the previous section, we have learned that the timer/counter in the microcontroller can have multiple uses, so how can I make them work for the purpose I need? This requires setting the timer/...[Details]
Introduction
Today, as IC (integrated circuit) has developed to a super-large scale, IC design based on IP (Intellectual Property) cores and their reuse are important means to ensure the ef...[Details]
RF/Wirelessly
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