IIDecide whether each of the following statements is true or false according to the text。please fill in the "T" or "F". 1. The development of digital signal processing origins from the 1860’s 2. The introduction of the microprocessor in the late 1970s and early 1980s made it possible for DSP techniques to be used in a much wider range of applications. 3. All DSP chips have a cycle time of 100nS. 4. DSP techniques can improve signal quality with filtering of signals and to exact important information rather than analog electronics. 5. DSP technology can collect, process, transmit, display and store the real world information, sometimes in real time.