Consider a simple circuit that consists of one digital input connected to a digital output.

假设，一个最简单的电路，只有一个数字输出端连接一个数字输入端。

youdao

The design has a simple circuit, low cost and stable performance, and can be used widely.

具有电路简单、成本低、性能稳定等特点，可广泛应用。

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This simple circuit made up of a source, a load and two wires is seldom, if ever, met with in practice.

这种由一个电源、一个负载和两根导线组成的简单电路，在实际中即使能碰见也是很少的。

youdao

But the two researchers have already used them to make a simple, disposable memory circuit, which they will describe in a forthcoming issue of Applied Physics Letters.

ECONOMIST: A new use for a common material

Now we are going to write some very simple instruments in Csound that our little MIDI circuit can control in real time.

ENGADGET: How-To Control Csound with a Custom Midi Controller: Hardware (2 of 2)