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  1. Refer to the simple modes of operation of a flip-flop demonstrated on the web site http://courses.ncsu.edu:8020/ece480/common/htdocs/, Digital Logic/Flip-Flop section.
    1. The D flip-flop is commonly used in the ___ (toggle, data) mode.
    2. The J-K flip-flop is very commonly used in the ___ (toggle, data) mode.
    3. The R-S flip-flop is commonly used in the ___ (toggle, reset/set) mode.

  2. Refer to Fig. 7-1 (below). What mode of operation is the J-K flip-flop in this diagram? Describe the action at output Q on each clock pulse.
    <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 7-1::/sites/dl/free/0073126349/443700/fig7_1.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 7-1 (3.0K)</a>Figure 7-1

  3. Define flip-flop. (use http://www.onelook.com or other electronics dictionary)

  4. Refer to Fig. 7-2 (below). Using Electronics Workbench® circuit simulation software, determine the truth table for this R-S flip-flop. It will look something like Table 7-1, Digital Electronics, 6th.ed. on page 216.
    <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 7-2::/sites/dl/free/0073126349/443700/fig7_2.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 7-2 (2.0K)</a>Figure 7-2

  5. Refer to Fig. 7-3 (below). Using Electronics Workbench® circuit simulation software, determine the truth table for this J-K flip-flop. It will look something like the table in Fig. 7-14(b), Digital Electronics, 6th.ed. on page 223.
    <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 7-3::/sites/dl/free/0073126349/443700/fig7_3.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 7-3 (1.0K)</a>Figure 7-3

  6. Refer to Fig. 7-4 (below). Using Electronics Workbench® circuit simulation software,
    1. determine what type of flip-flop this simulates (RS, Clocked RS, D or J-K flip- flop),
    2. demonstrate the circuit to your instructor.
      <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 7-4::/sites/dl/free/0073126349/443700/fig7_4.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 7-4 (3.0K)</a>Figure 7-4

  7. Refer to Fig. 7-5 (below). Using Electronics Workbench® circuit simulation software,
    1. determine what type of flip-flop this simulates (RS, Clocked RS, D or J-K flip- flop),
    2. demonstrate the circuit to your instructor.
      <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::Figure 7-5::/sites/dl/free/0073126349/443700/fig7_5.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif">Figure 7-5 (4.0K)</a>Figure 7-5





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