扬智科技最新的笔试题分享
扬智科技最新的笔试题分享：
软件题目
1. Insert a sequence fo keys(24,49,13,20,59,23,90,35) into a data structure, which has no keys initially. Depict the data structure after these insertions, if it is:
* a heap tree
* an AVL tree
2. Queue is a useful structure
* What is a queue
* Write 5 operations or functions, without details, that can be done on a queue.
3. * What is a synchronous I/O bus
* What is an asnchronous I/O bus
* Compare the advantages and disadvantages of synchronous and a synchronous I/O bus.
4. Explain the following terminology:
* Baud rate
* Handshaking
* Memory mapped I/O
5. Explain the key issues in supporting a real-time operation system for embedded system.
6. Explain the mapping of visual addresses to real addresses under paging by
* direct mapping
* associative mapping
* combined direct/associated mapping
7. Please explain what is “write-back” and “write-through”, and discuss the advantage and disadvantage about these two methods.
8. Explain the concept and benefit of threads
9. What is hardware interrupt What is software interrupt What is exception Please tell me all you know about interrupt.
10. Write a recursive function that tests wether a string is a palindrome. A palindrome is s string such as “abcba” or “otto” that reads the same in both directions.If you can write this function recursively,you can write an iterative version of this function instead.
11.什么是进程(Process)和线程(Thread)有何区别
12.MFC和SDK有何区别
13.IRP是什么有何作用
14.Windows 2000操作系统下用户模式和内核模式下编程有何区别
15.驱动程序的BUFFER能swap到磁盘上去吗为什么
16.试编写3个函数实现
(1)建立一个双向链表
(2)插入一个节点
(3)删除一个节点
17.简述Hardware interrupt和software中断的区别，简述其应用。
18.试编写一个函数，计算一个字符串中A的个数。
19.画出其相应流程图并编写一个函数实现一个整数到二进制数的转换，如输入6，输出110。
20.
(1)编写一个递归函数，删除一个目录。
(2)编写一个非递归函数，删除一个目录。
并比较其性能。
21.附加题：简单叙述编程经历
DSP题目
1.H(n)a*h(n1)+b*δ(n)
(1)求h(n)的z变换
(2)该系统是否为稳定系统
(3)写出FIR数字滤波器的差分方程
2.写出下面模拟信号所需的最小采样带宽
(1)模拟信号的频率范围是0~4kHz
(2)模拟信号的频率范围是2~4kHz
3.名词解释
(1)量化误差
(2)直方图
(3)白平衡
(4)MMX
4.写出下面几种格式中用到的压缩技术
(1)JPEG
(2)MPEG2
(3)MP3
硬件题目
1.用mos管搭出一个二输入与非门。
2.集成电路前段设计流程，写出相关的工具。
3.解释名词IRQ，BIOS，USB，VHDL，SDR。
4.简述如下Unix命令cp -r, rm,uname。
5.用波形表示D触发器的功能。
6.写异步D触发器的verilog module。
7.What is PC Chipset
8.用传输门和倒向器搭一个边沿触发器。
9.画状态机，接受1，2，5分钱的卖报机，每份报纸5分钱。