第一章问题 1The computer has experienced 4 generations, which are ( ).A. Transistors, SMI, Laser device, Optical mediumB. Vacuum Tubes, Transistors, SSI/MSI circuit, Laser deviceC. Vacuum Tubes, Digital tube, SSI/MSI circuit, Laser deviceD. Vacuum Tubes, Transistors, SSI/MSI circuit, LSI/VLSI circuit问题 2The components of CPU do not include ( ).A. Arithmetic unit B. memory C. register D. controller问题 3CPU can process information of external memory d