进位位

It is the hybrid of binary carry look-ahead adder of Brent-Kung~ and the carry select adder.

它结合了Brent-Kung对数超前进位加法器和进位选择加法器的优点，使得加法器的面积和连线减少了50%，而延时与加法器的长度的对数成正比。

The course of logic operations of carry lookahead adder for binary number is introduced into optical computation. The carry lookahead by optical parallel processing is proposed.

将二进制数的先行进位全加器的逻辑操作引入到光计算中，提出了用光学并行处理方法实现先行进位全加器逻辑操作的建议。

The decimal system is a carry system widely used in the world today.

十进位是世界上被广泛使用的进位制。

A in hexadecimal is 10 in decimal and therefore is 1010 in binary.

十六进位中的 A 是十进位中的10，所以在二进位中是1010。

The design of the device using NC Lathe CA6140 control, part of the main transmission system using AC spindle motor and graded by the pulley driven spindle gearbox, through the inverter and gearbox to achieve sub; Feed System used by stepper motor driven ball screw slowdown after campaign vertical feed system through a gear after the ball screw drive, in the horizontal feed system through two gear-driven ball screw; Tool to automatically transfer tool carrier (4-position), thus achieving automatic tool change; by MCS-51 series 8051 data to be dealt with. from the I / O interface stepper pulse output signal to control the feed rate and itineraries; In order to maintain the function of cutting thread, to the outer end of spindle or other appropriate location loaded pulse generator; Lathe will be transformed into Tailstock manually controlled electric Tailstock.

本设计利用数控装置对CA6140普通车床进行控制，主传动系统部分采用交流调频主轴电动机经带轮及分级齿轮变速箱驱动主轴，通过变频器和齿轮变速箱实现分段无级变速；进给系统采用步进电机通过减速后驱动滚珠丝杠运动，在纵向进给系统中通过一级齿轮减速后驱动滚珠丝杠，在横向进给系统中通过二级齿轮减速驱动滚珠丝杠；刀架改为自动转位刀架从而实现自动换刀；通过MCS-51系列8051单片机对数据进行计算处理，由I/O接口输出步进脉冲信号控制进给速度和行程；为了保持切削螺纹的功能，要在主轴外端或其它适当部位装上脉冲发生器；将车床的手动尾座改造成为可控电动尾座。

The design of the device using NC Lathe CA6240 control, part of the main transmission system using AC spindle motor and graded by the pulley driven spindle gearbox, through the inverter and gearbox to achieve sub; Feed System used by stepper motor driven ball screw slowdown after campaign vertical feed system through a gear after the ball screw drive, in the horizontal feed system through two gear-driven ball screw; Tool to automatically transfer tool carrier (4-position), thus achieving automatic tool change; by MCS-51 series 8051 data to be dealt with.

本设计利用数控装置对CA6240普通车床进行控制，主传动系统部分采用交流调频主轴电动机经带轮及分级齿轮变速箱驱动主轴，通过变频器和齿轮变速箱实现分段无级变速；进给系统采用步进电机通过减速后驱动滚珠丝杠运动，在纵向进给系统中通过一级齿轮减速后驱动滚珠丝杠，在横向进给系统中通过二级齿轮减速驱动滚珠丝杠；刀架改为自动转位刀架从而实现自动换刀；通过MCS-51系列8051单片机对数据进行计算处理，由I/O接口输出步进脉冲信号控制进给速度和行程；为了保持切削螺纹的功能，要在主轴外端或其它适当部位装上脉冲发生器；将车床的手动尾座改造成为可控电动尾座。

Likewise, B in hexadecimal is 1011 in binary, and C in hexadecimal is 1100 in binary.

同样地，十六进位中的 B 是二进位的1011，而十六进位中的 C 是二进位的1100。

The function that allows the adding of one to the least significant digit in the result of a calculation together with the necessary carries, if any of the highest decimal places dropped off has a value of more than zero.

一种功能，若计算结果的舍弃部分最高位的十进位数字大于零，则使结果中的最低位有效数字加1，并进行必要的进位。

In octal is 2748 in decimal.

八进位的5274是十进位的2748。

It"s revealed that the consistency probability of unsigned ones complement addition with bit-wise exclusive-OR is very greater than the ideal value 2~", though it is very small, and the consistency probability of unsigned ones complement addition with addition modulo 2 is 2/3 approximately, hence it is very large.

结论表明，进位返加运算与逐位模2加运算的相容概率尽管很小，但远大于理想值2~；进位返加运算与模2~n加运算的相容概率很大，近似为2／3。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。