四年級下冊英語練習(xí)題及參考答案

2003 Software Engineer筆試題

1. Describe x86 PC’s architecture in a diagram cpu, core chipset, Cache, DR AM, IO-subsystem, IO-Bus

2. SWI instruction is often called a “supervisor call”, describe the act ions in detail
* Save the address of the instruction after the SWI in rl4_svc.
* Save the CPSR in SPSR_svc.
* Enter supervisor mode and disable IRQs.
* Set the PC to 08 and begin executing the instruction there.

3. What is PIO operation? advantage and disadvantage?
* DMA operation? advantage and disadvantage?
* Scatter/Gather DMA engine? how does it operate?

4. MP3 decoder related. (a flow chart of decoding is presented)
* advantages of Huffman encoding?
* why the aliasing reduction is necessary?
* analytical expression in mathematics of the IMDCT?
* which block in the flow chart is suitable for the software implementatio n and which for the hardware? why?

5. Assembly codes -> C language (about 15 lines).

6. Graduation thesis description.

【四年級下冊英語練習(xí)題及參考答案】相關(guān)文章：

中考英語閱讀理解練習(xí)題及參考答案03-25

小學(xué)四年級英語下冊練習(xí)題12-28

小學(xué)四年級下冊英語練習(xí)題12-31

初二英語下冊練習(xí)題04-28

四年級下冊英語暑假作業(yè)參考答案04-07

英語暑假作業(yè)參考答案四年級下冊05-01

四年級暑假下冊英語作業(yè)練習(xí)題04-28

2017四年級英語下冊同步練習(xí)題04-21

2017英語PEP四年級下冊練習(xí)題06-02