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Timer

A timer is a specialized type of clock for measuring time intervals.[1] By function timers can be categorized to two main types. A timer which counts upwards from zero for measuring elapsed time is often called a stopwatch; a device which counts down from a specified time interval is more usually called a timer[1] or a countdown timer. A simple example for this type is an hourglass. By working method timers have two main groups: Hardware and Software timers. Some timers sound an audible indication that the time interval has expired. Time switches, timing mechanisms which activate a switch, are sometimes also called "timers".

Timer

型号	DS	厂牌	批号	数量	地区	采购
CD4541BM		TI	2023+	9667	香港	要求报价
CD4541BM		TI	-	2557	香港	要求报价
CD4541BM		TI	2015+	49	中国	要求报价
CD4541BM		TI	-	28	美国	要求报价
CD4541BM		TI	2024+	687	香港	要求报价
CD4541BM		TI	2012+	83	香港	要求报价
CD4541BM		TI	-	5000	中国	要求报价
CD4541BM		TI	2022+	38760	中国	要求报价

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