1.PLC的基本组成 2.各个部分的作用 3 PLC控制原理

一、冷却管路的功用及形式 (一)功用 在柴油机中,燃料燃烧放出的热大约45-50%转换为有用功,25-35%要从活塞、气缸等部件散出,其余由排气带出

1 I/O Hardware and I/O control methods Polling (轮询方式) Interrupts (中断方式) Direct Memory Access (DMA方式) I/O hardware summary 2 Application I/O Interface Block and Character Devices Network Devices Clocks and Timers Blocking (阻塞) and Nonblocking (非阻塞) I/O 3 Kernel I/O Subsystem I/O Scheduling Buffering (缓冲机制) Caching, Spooling & device reservation Error Handling I/O Protection Kernel Data Structures 4 Transforming I/O Requests to Hardware Operations 5 Performance

1 多道程序技术和程序并发执行的条件 2 Process Concept 3 Process Scheduling 4 Operation on processes 5 Interprocess Communication (进程间通信, IPC) 6 Example of IPC Systems 7 Communication in C/S Systems

电刺激治疗仪 心脏除颤器 高频电刀 微波热疗治癌仪 射频热疗仪 超声治疗仪 体外冲击波碎石机 体外反搏装置 电化学治癌仪 远红外理疗仪

附表 1 等截面等跨连续梁在常用荷载作用下的内力系数表 附表 2 双向板计算系数表 附表 3 风荷载特征值 附表 7 框架柱反弯点高度比

Computer System Operation A modern computer system System boot Interrupt I/O Structure I/O Structure I/O operation DMA Storage Structure and Storage Hierarchy Storage Structure Storage hierarchy Hardware Protection Hardware Protection General System Architecture General System Architecture system call Computing Environments

Demand Paging (按需调页) Copy-on-Write (写时复制) Page Replacement (页面置换) Allocation of Frames Thrashing (抖动) Memory-Mapped Files Allocating Kernel Memory Other Issues Operating System Examples

• Cortex-M3指令集简介 • 汇编语言基础 • 数据传输指令 • 数据处理指令 • 条件转移指令 • 一些有用的新指令 • 子过程 • 内积计算 • 卷积计算

1 Background and System Model 2 Deadlock Characterization Necessary Conditions Resource-Allocation Graph Methods for Handling Deadlocks 3 Deadlock Prevention (死锁预防) 4 Deadlock Avoidance (死锁避免) Safe State (安全状态) Resource-Allocation Graph Scheme Banker’s Algorithm (银行家算法) 5 Deadlock Detection (死锁检测) and Recovery