| 术语 | flag |
| 释义 | flag 标志［记］(符);［旗标］ 1. A variable indicating that a certain condition holds. 一种表示维持一定状态的变量。 2. An indicator that shows the existence of a certain condition when “set” and the absence of the condition when “clear”;for example, a bit position in which a 1bit is placed in event of a size error or a character in a compiler print out that indicates “unknown address”. 一种指示符,当该指示符位设置时,表示存在某一状态;当该指示符位清除时,表示不存在 这一状态。例如,一旦出现长度错或打印输出中的字符指示出地址未知,便可将1置于一个 二进制位,表示上述差错状态存在。 3. In HDLC or SDLC, a standard bit pattern(01111110) that begins and ends each frame; it is used for synchronization and identifies a frame to receiving hardware. HDLC或SDLC规程中的一种标准的位组合,即01111110,用以标识每一帧的开始和结束, 还可用于与接收站硬件同步,并向接收硬件标识到来的帧。 4. A bit or bit pattern in a header of a storage location or unit of data that indicates some special condition (readonly, defective track). 存储器单元或数据单元标题头中的一位或位组合,用以指示某种特殊状态(只读,故障码道)。 5. An indicator, usually a single binary bit, whose state is used to inform a later section of a program that a condition, identified with flag, had occurred. A flag can be both softwareand hardwareimplemented. 通常由一个二进制位组成的指示符,它的状态用来通知一个程序的后面的某一部分,由 指示符所标识的以及由它所指定的状态业已发生。标志可由软件实现,也可由硬件实现。 6. Refers to a bit (or bits) used to store one bit of information. A flag has two stable states and is the software analogy of a flipflop. 指一位(或一些位),用来存储一位信息。标记有两种状态,而且是一个触发器的软件模拟。 |
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