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The main challenges of LTE device testing include the following four aspects:
First, the challenges brought by OFDM: Compared with traditional single-carrier signals using CDMA or TDMA, OFDM sign...[Details]
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What are the commonly used chips that make up DSP systems?
1)Power supply: TPS73HD3xx, TPS7333, TPS56100, PT64xx...
2)Flash: AM29F400, AM29LV400, SST39VF400...
3)SRAM: CY7C1021, CY7C1009, C...[Details]
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Programmable controllers have various structures, but their general principles are basically the same, all of which are based on a microprocessor. They are usually composed of a central processing ...[Details]
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About this document
For ARM-based RISC processors, the GNU C compiler provides the ability to inline assembly code in C code. This very cool feature provides capabilities not available in C cod...[Details]
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In 2021, driven by the global carbon neutrality strategy and electrification trend, the new energy industry chain entered a period of accelerated development. On the market side, the new energy veh...[Details]
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1. Introduction
HTTP ABR (Adaptive Bit Rate) is currently the most popular OTT (Over-The-Top) transmission technology. Typical examples include Apple HLS (HTTP Live Streaming), Microsoft Smoo...[Details]
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At present, the renderings of the OnePlus 9 series have been exposed on the Internet many times, sparking heated discussions among many netizens. According to the renderings exposed online, i...[Details]
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Due to the low price, low heat generation and high light efficiency of low-power white LED, it has been widely used in general lighting and landscape lighting. Therefore, there is an urgent need to im...[Details]
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1 Introduction
The use of a unified protocol standard for CAN bus control network and the Internet is one of the ways to integrate CAN bus control network and the Internet. At present, it is sti...[Details]
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An oscilloscope is a graphical display device that depicts the waveform of an electrical signal. This simple waveform can illustrate many characteristics of a signal: the time and voltage values ...[Details]
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America's suppression of Chinese companies such as Huawei has aroused the indignation of many Chinese people, so there have been calls for decoupling from America on the Internet. Li Nan, former seni...[Details]
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On February 29, 2012, the Raspberry Pi single-board computer (SBC) was launched, setting a record of 100,000 units sold on the first day of sales. Over the past decade, manufacturers, professional en...[Details]
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AY0438 is a 32-segment CMOS LCD driver produced by Microchip. It has a simple structure and is easy to use. It can directly drive the LCD display module under the control of a single-chip microcomp...[Details]
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When it comes to how long it takes to learn how to develop your own microcontroller, I might as well share with you my journey of learning microcontrollers. I learned about microcontrollers because I...[Details]
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Analysis of LCD working principle:
1. LCD hardware architecture:
LCD hardware system: You can see that the LCD controller is in the ARM processor, and the LCD screen and p...[Details]
Sensor
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