Seektronics

MCU (Microcontroller Unit) is a familiar microcontroller, a single-chip microcomputer that can perform a small amount of simple data operations, consisting of a central processing unit (CPU), flash memory, input/output (I/O), timer/calculator, digital/analog peripherals, and communication interface. 4-bit, 8-bit, 16-bit and 32-bit. As electronic products become intelligent, the high-end demand for automotive, network, industrial control, etc. has led to the mainstream of high-end 32-bit MCU chips.   8-bit and 32-bit MCUs are in competition with each other   From the development trend, the use cases of 4-bit and 16-bit MCU chips are becoming less and less, and 8-bit and 32-bit MCU chips are more active in the market now. In the past, when mechanical control and simple command control were the mainstream, 8-bit MCU single chip had a glorious time and was often used in remote control, power switch, monitor and keyboard, mouse control and other executive work, products such as motor, tool

Multiple reports indicate that Japan's JVC Kenwood has announced a price increase of up to 30% for car recorders and car navigation systems as of April 1.   The price of automotive equipment will rise by 3-15%, the price of consumer equipment such as headphones will rise by 5-20%, and the price of commercial equipment such as wireless systems will rise by 10-30% due to the price of raw materials such as chips.   Last April, JVC Kenwood also announced a similar price increase for car radios, and consumer and commercial radio equipment in the range of about 3% to 25%. This year's price increase is even greater.   JVC Kenwood said that with the soaring price of crude oil, raw material prices continue to rise, and distribution costs continue to rise, it is difficult to maintain regular product prices by self-reliance alone. The price increase of power supply DC/DC chips also affected the price of the low-power transceivers and other digital devices.   In the field of automotive, JV

In 2022, the market is flagging, the PC market and the demand for electronic consumption are declining, the major manufacturers are cutting orders continuously, the inventory is high successively, and the overall market supply and demand mismatch; There are also cases of short supply, such as logic chips, IGBT, automotive MCU and so on to maintain a high business status.   In the face of this market situation, look at Taiwan Semiconductor, Intel, Samsung, SK Hynix,  United electric, and other major manufacturers, how to optimize the industrial layout adjustment, to meet the 2023 new start.     [Taiwan Semiconductor Manufacturing Company]   Attack overseas market, improve 3 nm yield; Technology development 2-nanometer process; The expenditure budget has been further revised down.   From the perspective of the process node, the utilization rate of 7nm and 6nm capacity of TSMC has declined, which is estimated to take several quarters to adjust. It is expected that the demand is expected t

  CPU   Generally speaking, the CPU computing power is the weakest, although the CPU has the highest main frequency, but the single is also 8 cores, 16 cores, a core of 3.5g, 16 cores is 56g, and then consider the instruction cycle, up to 30g times per second multiplication. Still fixed point.   D SP   Although the main frequency of the DSP is not as good as the CPU, but the multiplier is more, casually with 16 multipliers, or floating point. And then a 4 cores, 8 cores, and specific algorithms hardware acceleration, so although the main frequency is only 1,2g but the computing power is still stronger than the CPU. Of course, now there is a CPU with a dedicated multiplier, DSP also set the ARM core, the boundary between the two began to blur.   All DSP calculations use floating point algorithms, and there are no bit or integer instructions yet.   GPU   GPU is designed for image processing, the main frequency is generally around 500mhz, but there are many cores, such as titan, there are

1.  PCB board surface treatment   PCB board surface treatment processes include: anti-oxidation, spray tin, lead-free spray tin, sink gold, sink tin, sink silver, hard gold plating, full-board gold plating, gold finger, nickel-palladium-gold OSP, etc.. Requirements are mainly: lower cost, good solderability, harsh storage conditions, short time, environmentally friendly processes, good welding, flat . Tin spraying: Tin spraying boards are generally multi-layer (4-46 layers) high precision PCB prototype boards, which have been used by many large domestic communication, computer, medical equipment and aerospace companies and research units.   The connecting finger is the component on the memory stick that connects to the memory slot, and all signals are transmitted through the gold finger. Gold fingers are composed of numerous gold-colored conductive contacts, which are called "gold fingers" because of their gold-plated surface and the finger-like arrangement of the conductive