查询词典 computers

First it produces the pulse signal by the multivibratorwhich is consisted of 555 timer and send in the detecting coil to form the alternating magnetic field, then it asopts UGN3503 linear half-effect as prode to the magnetic field change into the voltage signal change,after enlargement electric circuit and peak value examination electric circuit,the signal be treated to send into ADC0809 modulus converter change moduluses, then the digital signal after the modulus converter is changed is sent into AT89C51one-chip computers afterwards, after the digital filter, AT89C51one-chip computers afterwards compares the data to the reference voltage and judges whether to have detected the metal and alarm.

这个系统是以AT89C51单片机为核心，首先由555定时器构成多谐振荡器产生脉冲信号送入探测线圈以形成交变磁场，然后经过线性霍尔器件UGN3503将磁场变化转换为电压信号的变化，经过放大电路和峰值检测电路，经数模转换之后输入到单片机中，由单片机对数据进行软件滤波之后，与基准值比较之后，判断是否存在金属和报警显示。

Barebones, whole computer systems, computer accessories, everything in computers you can find in surplus and discount computers.

barebones，整个电脑系统，电脑配件，都可以找到你在电脑盈余及贴现电脑。

The first generation of computer was characterized by the most prominent feature of the ENIAC-vacuum tubes.Through 1950,several other notable computers were built,each contributing significant advancement,such as binary arithmetic,random access,and the concept of stored programs.These computer concepts are common in today's computers.

第一代计算机ENIAC以真空管为显著标志，到1950年又制造出了另外几台著名的计算机，而且每一台都取得了很大的进展，如像二进制运算、随机存取和存储程序的概念，这些概念在当今的计算机中仍是普遍使用的。

Now, the number of on-line computers reaches 0.103billion, which is still increasing. The number of on-line computers in the world is over 0.7billion. The increase of these cardinal numbers makes more people pay attention to the net, and it's used more frequently. It's the same as the company.

目前，国内上网用户数量已达1.03亿，且仍在持续快速增长，全球上网用户已超7亿，这些基数的增加促使互联网的被关注度和使用频率快速增加，企业亦是如此。

As computers increased speed in 1980's, people failed to realize that CISC computers were holding speeds down.

在上世纪 80 年代计算机提速时，人们也没有意识到 CISC 计算机的速度已经下降了。

Student Use of Computers 01 Coincident with conspicuous advancement of economy is the growing importance 02 of computers.

计算机的学生使用一致的与经济的显着进步是计算机的增加重要。

Let us recall that the quantum computers, in contrast to classical COMPUTERS, operate not with bits, but by kubit, in which is stored not discrete state 0 or 1, but their superposition.

让我们回顾说，量子计算机，在对比的经典计算机，运作不与位，而是由kubit ，在其中存储不离散状态0或1 ，但它们的叠加。

150 Chapter 1 The History and Future of Computers 3.2 Boolean Algebra Table 3-2 Distributivity Idempotency Absorption laws 分配律同一律吸收律 a=ab+ac a+= a+a=a aa=a a+ab=a a=a'=a'b''=a'+b' DeMorgan's laws德摩根定理计算机专业英语 1-151 Chapter 1 The History and Future of Computers 3.2 Boolean Algebra Since a finite set of n elements has exactly 2n subsets, and it can be shown that the finite Boolean algebras are precisely the finite set algebras, each finite Boolean algebra consists of exactly 2n elements for some integer n.

由于n个元素的有限集有且只有个子集由于个元素的有限集有且只有2n个子集，而且很显然有限布个元素的有限集有且只有个子集，尔代数一定是有限集合代数，所以对某个整数n而言而言，尔代数一定是有限集合代数，所以对某个整数而言，每个有限布尔代数也有且只有2n个元素。例如，上文定义的集合T的限布尔代数也有且只有个元素。

This kind of parallel processing hugely improves the computational speed, and can change some NP problems that cannot be accomplished by classical computers, i.e., the complexity of the problems exponentially increases with the increase of bits, to P problems, i.e., the complexity of the problems polynomially increases with the increase of bits. In 1994 Peter Shor at Bell Laboratory proved that quantum computers could efficiently solve the problem of Large Number Factorization, which was the security footstone of nowaday classical cryptosystems, while none of any classical computers could implement this.

这种并行处理极大地提高了计算速度，可以把一些经典计算中无法计算的NP问题即问题的复杂度随着比特位数的增长而指数上升，变成P问题即问题的复杂度随着比特位数的增长以多项式上升。1994年，Bell实验室的Peter Shor证明量子计算机可以有效解决经典计算机所不能解决的大数因子分解问题，而这恰恰是目前经典密码的安全性基础。

If, for example, one adopts Newell, Perlis, and Simon's (1967) classic definition of computer science as "the study of computers and the major phenomena that surround them," then the interaction of people and computers and the uses of computers are certainly parts of those phenomena.

例如， Newell ， Perlis 和 Simon （1967）对计算机科学的经典定义是&对计算机和周围环境重要现象的研究&。人和计算机的交互，计算机的使用都属于这些现象。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。