Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM

Crystal oscillator

Factory direct sales - solid capacitor - patch aluminum electrolysis, to ensure that the factory first-class goods!

At least one electronic engineer requires technical requirements

1. MCU classification: 4 bit machine, 51, PIC, AVR, MSP430 and other series to learn;

2. Hardware knowledge: components, PCB layout, classic circuits, communication protocols, EMC, development tools;

3. Software knowledge: ASM, C, C++, VISIO, SmartDraw, SourceInsight, VC++6.0;

4. Auxiliary knowledge: AutoCAD, Matlab, OrCAD, related software, important projects;

5. Proficient in electronic components, very familiar with the use of commonly used components;

6. Input and output port control KEY, V/F converter, voice control, power supply design and monitoring, basic unit circuit;

7. Display technology LED, LCD, VFD and other control technologies;

8. Electromechanical control technology PWM, motor control, remote control;

9. Data acquisition technology AD, DA, knowledge of various sensors, and the attention of writing programs;

10. Signal and algorithm technology, coding, various algorithm data structures, C, ASM source code;

11. Communication technology SPI bus, I2C bus, CAN bus, RS232, RS485, 1-WIRE.

12. PCB design skills, simulation software MultiSim, EMC, EMI technical knowledge.

13. Programming specifications ASM, C, C++ design capabilities.

14. ADS, Protel DXP, proficient application of KEILC related software;

15. Embedded UC/OS-II core, ARM architecture and programming, familiar with typical chips;

The following is a summary from the recruitment requirements of some electronic engineers:

First, the general requirements

1, age: not limited, some marked 20 to 40 years old, in fact, is not limited

2, Education: more than one, individual is a junior college

3, foreign language: good, English level 4 or above (although you have not passed the fourth level, but you can tell him what the certificate can not represent, then he will usually come up with some English information, usually the original English information of the chip for you to translate So you can't fool this)

4, work experience: 2 years (this is a sultry, excellent fresh graduates they also recruit, so the above written to have experience, do not give up on this, you should also vote for resume, and eloquence Be sure to be better, be confident:)

Second, general skills requirements

1. Have experience in MCU development, familiar with common development tools, and have certain experience in MCU programming;

2. Proficiency in Protel, some companies require PowerPCB, and individual CAD software such as Orcad is required;

3. Proficiency in assembly language and C language. (C language must be)

4. Master common simulation development tools (like KEIL software, ISP programming software, etc.)

5, skilled application of common electronic components

6, skilled in the retrieval of various components and materials;

7, can use AVR microcontroller, PIC microcontroller (preferably better understand, there are 51 basics is easy to learn)

Third, special skills requirements

1. Familiar with embedded system development, with experience in ARM system development is preferred

2, with FPGA, CPLD development experience is preferred;

3, there are four layers and above PCB Layout experience;

4. Practical experience in signal integrity, power integrity and EMI analysis for PCB design;

5. Familiar with application-related simulation software for analysis is preferred.

6, with embedded system or DVD related professional design experience is preferred

7. Familiar with relevant industry standards, EMC/ESD debugging experience is preferred (the third article above is extra points!)

Fourth, professional experience and ethics

1. Careful and meticulous work, positive attitude and strong sense of responsibility

2, excellent language skills

3. Good communication and problem solving skills

4, teamwork ability

5, able to work overtime often

6, have a keen "customer service" awareness

Hardware engineer essential knowledge

1. Hardware engineer basics

Purpose: To understand and master the most basic knowledge of qualified hardware engineers based on actual experience and actual projects.

1) Basic design specifications

2) CPU basic knowledge, architecture, performance and selection guide

3) MOTOROLA's PowerPC series basic knowledge, performance details and selection guide

4) Basic knowledge, architecture, performance and selection of network processors (INTEL, MOTOROLA, IBM)

5) Basic knowledge and performance of common bus

6) Detailed performance introduction, design points and selection of various memories

7) Basic knowledge of physical layer interface chips commonly used in Datacom and Telecom, performance, design points and selection

8) Common device selection points and essence

9) Detailed performance introduction, design points and selection guide of FPGA, CPLD and EPLD

10) Introduction to VHDL and Verilog HDL

11) Network Foundation

12) Hardware research and development process of domestic large-scale communication equipment companies;

2. The most popular EDA tool guide

Familiarize yourself with the latest and most popular professional design tools in the industry

1) Innoveda's ViewDraw, PowerPCB, Cam350

2) CADENCE's OrCad, Allegro, Spectra

3) Altera's MAX+PLUS II

4) Learn to use tools such as VIEWDRAW, ORCAD, POWERPCB, SPECCTRA, ALLEGRO, CAM350, MAX+PLUS II, ISE, FOUNDATION;

5) XILINX's FOUNDATION, ISE

III. Overall hardware design

Master the hardware design experience and design ideas necessary for the overall hardware design

1) Product demand analysis

2) Development feasibility analysis

3) System plan research

4) Overall architecture, CPU selection, bus type

5) Mainstream CPUs in data communication and telecommunications: M68k series, PowerPC860, PowerPC8240, 8260 architecture, performance and comparison;

6) Overall hardware structure design and issues that should be noted;

7) Communication interface type selection

8) Task decomposition

9) minimum system design;

10) PCI bus knowledge and specifications;

11) How to avoid fatal errors during the overall design phase;

12) How to properly perform task decomposition to achieve twice the result with half the effort?

13) Project case: medium and low-end routers, etc.

Hardware schematic design technology

Objective: Through detailed project cases, detailed experience of schematic design, detailed design points and essence.

1) Principle design experience and essence of mainstream CPU (M68k, PowerPC860, 8240, 8260, etc.) in the field of telecommunications and data communication;

2) The essence of the schematic design of Intel's PC motherboard

3) The principle design experience and essence of the network processor;

4) Experience and essence of bus structure principle design;

5) Memory system principle design experience and essence;

6) Experience and essence of the principle design of the general physical layer interface in data communication and telecommunications;

7) The design experience and essence of WATCHDOG commonly used in telecommunications and data communication equipment;

8) Design experience and essence of the principle of hot plugging for telecommunication and data communication equipment systems;

9) Experience and essence of crystal oscillator and clock system principle design;