Hanwang pen exam

Your major may not fully match the fields involved in this question. Therefore, not all questions need to be answered. You can only answer the questions you are familiar with and can answer. You can refer to any materials, but please complete this question independently. We appreciate your spirit of thinking and innovation. This question is not the only basis for us to hire or not to hire you.

If you are a Senior Hardware developer, please answer these questions.

1. Below are some basic questions about digital circuits. Please give a brief answer:

(1) What are setup and holdup time?

(2) What is competition and adventure? How to judge? How to eliminate it?

(3) Draw a logical circuit that uses the D trigger to achieve a 2x division.

(4) What is "line and" logic? What are the specific requirements on hardware features to implement it?

(5) What is the synchronization logic and asynchronous logic?

(6) draw out the typical input device and microcomputer interface logic (data interface, control interface, recorder/buffer) in the microcomputer interface circuit ).

(7) What common logical levels do you know? Can TTL and COMS levels be directly interconnected?

2. programmable logic devices are becoming more and more important in modern electronic design. Could you tell me:

(1) What programmable logic devices do you know?

(2) Describe the logic of an 8-bit D trigger by using VHDL or OpenGL.

3. Imagine that you will design an electronic circuit solution. Please briefly describe the whole process of designing with EDA software (such as Protel) (including schematic diagram and PCB diagram) to debug the prototype. What issues should we pay attention to in each link?

Hanwang pen exam