When the 74LS90 chip QA is connected to INPUT B and the counting pulse is input from INPUT A, which counting system does the chip employ? ()
A: Binary system
B: Quinary system
C: Decimal system
D: Septenary system
A: Binary system
B: Quinary system
C: Decimal system
D: Septenary system
举一反三
- The timer T1 of 8051 single chip microcomputer is used as counting mode, and the counting pulse is. A: Input from T1 (p3.5) B: Provided by internal clock frequency C: Input from t0 (p3.4) D: Counting by external counting pulse
- 片上系统，又称SOC，其英文全称是： A: Separation of concerns B: System on Chip C: System Operations Center D: System of computer
- If the steady-state error of unity feedback control system to a ramp input is constant, then the system is a type system A: 0 B: I C: II D: III
- SOC是SYSTEM ON A CHIP的缩写
- 苹果 IOS 作为移动端的操作系统，其全称是： A: Input & Output System B: internetworking Operating System C: Iphone Operating System D: Interactive Operating System