
Principles Of Electric Circuits
10th Edition
ISBN: 9780134879482
Author: Floyd, Thomas L.
Publisher: Pearson,
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Textbook Question
Chapter 5, Problem 9P
What is the total resistance of twelve 5.6 kΩ resistors in series?
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circuit 2
Suppose you have 8 LED's connected to port-B (Bo-B7) of PIC16F877A and one switch
connected to port-D (Do) as shown in figure below. Write a program code that performs a
nibble (4-bits) toggling: if the switch is released then LED's (Bo to B3) are OFF and LED's
(B4 to B7) are ON, while if the switch is pressed then LED's (Bo to B3) are ON and LED's
(B4 to B7) are OFF. Use 300ms delay for each case with 4MHz frequency.
13
14
22 NATHON 20
U1
OSC1/CLKIN
U2
33
REOINT
20
34
OSC2/CLKOUT
19
RB1
35
3
18
RB2
RADIANO debt0RB3PGM
30
4
17
37
5
10
RA1/AN1
RB4
38
RA2/ANZ/VREF-/CVREF
15
RB5
39097
RA3/AN3VREF RB6/PGC
7
14
40
RA4/TOCK/C1OUT
13
RB7/PGO
RAS/ANA/SS/CZOUT
15
RCO/T1OSO/TICKI
10
11
REQIANS/RD
18
RC1/T10S/CCP2
17
10
RE1/AN/WR
REZ/ANTICS
MCLR/Vpp/THV
RC2/CCP1
LED-BARGRAPH-RED
RC3/SCK/SCL
RC4/SDUSDA
RC5/SDO
Eng of ROSTX/CX
RC7/RX/DT
RDO/PSPO
RD1/PSP1
RD2PSP2
RO3/PSP3
RD4/PSP4
ROS/PSP5
RD6/PSP6
RD7/PSP7
PIC16F877A
+5V
R1
100R
Write a PIC16F877A program that flash ON the 8-LED's connected to port-B by using
two switches connected to port-D (Do & D₁) as shown in figure below, according to the
following scenarios: (Hint: Use 500ms delay for each case with 4MHz frequency)
1. When Do=1 then B₁,B3,B, are ON.
2. When Do 0 then Bo,B2,B4, B5, B6 are ON.
3. When D₁=1 then B4,B,,B6,B7 are ON.
4. When D₁-0 then Bo,B1,B2,B3 are ON.
U1
5
33
OSC/CLION
OSC2/CLKOUT
ROOINT
RB1
35
RB2
20
17
RACIANO
RESPOM
RATANT
RAZIANZ/VREF-CVREF
RBS
RA3/AN3/VREF+
REPOC
39
14
40
RA4/TOCK C1OUT
13
RB7/PGO
12
RASIAN/SCOUT
15
ROOT1050/TICK
+5V
REGIANERD
REVANDVIR
REZANTICS
RCMT10SUCCP2
17
RC2/CCP1
LED-BARGRAPH-RED
RC3SCHISCL
23
---
MCUANTV
RC4/SOSDA 24
RCS/SDO
RCB/TICK
RC7/RXDT
25
ROOPSPO
RDMPSP1
RD2PSF2
RO3PSP3
RD4PSP4
RDSPSPS
PIC16F877A
ROOPSP
RO7/PSP7
R2
R1
100R 100R
Chapter 5 Solutions
Principles Of Electric Circuits
Ch. 5 - (a) Show how you would rewire the protoboard in...Ch. 5 - How is the circuit changed when pin 2 and pin 3 in...Ch. 5 - Determine the total resistance in Figure 5-10(a)...Ch. 5 - What is the total resistance for the following...Ch. 5 - Determine the value of R4 in Figure 5-12 if the...Ch. 5 - Find RT for three 1.0 k resistors and two 720 ...Ch. 5 - What is the value of R2 if the highest current is...Ch. 5 - Determine V3 if the polarity of VS2 is reversed in...Ch. 5 - Starting with Equation 5-5, prove that the...Ch. 5 - What is the power in the circuit of Figure 5-48 if...
Ch. 5 - Determine the minimum power rating required for...Ch. 5 - Assume that R1 is shorted In Figure 5-61. What...Ch. 5 - A series circuit can have more than one path for...Ch. 5 - The total resistance of a series circuit can be...Ch. 5 - If two series resistors are different sizes, the...Ch. 5 - If two series resistors are different sizes, the...Ch. 5 - If three equal resistors are used in a voltage...Ch. 5 - There is no valid electrical reason for installing...Ch. 5 - Kirchhoffs voltage law is valid only if a loop...Ch. 5 - Prob. 8TFQCh. 5 - Prob. 9TFQCh. 5 - If point A in a circuit has a voltage of +10 V and...Ch. 5 - Two equal-value resistors are connected in series...Ch. 5 - Prob. 2STCh. 5 - Prob. 3STCh. 5 - When one of four series resistors is removed from...Ch. 5 - Prob. 5STCh. 5 - A 9 V battery is connected across a series...Ch. 5 - While putting four 1.5 V batteries in a four-cell...Ch. 5 - If you measure all the voltage drops and the...Ch. 5 - There are six resistors in a given series circuit...Ch. 5 - A series circuit consists of a 4.7 k, a 5.6 k, and...Ch. 5 - Which of the following series combinations...Ch. 5 - The total power in a certain circuit is 1 W. Each...Ch. 5 - When you connect an ammeter in a series-resistive...Ch. 5 - While checking out a series-resistive circuit, you...Ch. 5 - With a 10 V voltage source connected between...Ch. 5 - For the conditions described in Question 1, the...Ch. 5 - When the switches are in position 1 and a short...Ch. 5 - When the switches are in position 2 and a short...Ch. 5 - If the current shown by one of the milliammeters...Ch. 5 - If the source voltage decreases, the current...Ch. 5 - If the current through R1 increases as a result of...Ch. 5 - If the switch is thrown from position A to...Ch. 5 - If the switch is thrown from position B to...Ch. 5 - If the switch is thrown from position C to...Ch. 5 - If R1 is changed to 1.2 k, the voltage from A to B...Ch. 5 - If R2 and R3 are interchanged, the voltage from A...Ch. 5 - If the source voltage increases from 8 V to 10 V,...Ch. 5 - Connect each set of resistors in Figure 563 in...Ch. 5 - Determine the groupings of resistors in Figure 564...Ch. 5 - Determine the nominal resistance between pins 1...Ch. 5 - Determine the nominal resistance between pins 2...Ch. 5 - On the double-sided PC board in Figure 565,...Ch. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Calculate RT for each circuit of Figure 566....Ch. 5 - What is the total resistance of twelve 5.6 k...Ch. 5 - Six 56 resistors, eight 100 resistors, and two...Ch. 5 - Prob. 11PCh. 5 - You have the following resistor values available...Ch. 5 - Find the total resistance in Figure 566 if all...Ch. 5 - What is the total resistance from A to B for each...Ch. 5 - What is the current through each resistor in a...Ch. 5 - The current from the source in Figure 569 is 5 mA....Ch. 5 - Show how to connect a voltage source and an...Ch. 5 - Using 1.5 V batteries, a switch, and three lamps,...Ch. 5 - What is the current in each circuit of Figure 570?...Ch. 5 - Determine the voltage drop across each resistor in...Ch. 5 - Three 470 resistors are connected in series with...Ch. 5 - Four equal-value resistors are in series with a 5...Ch. 5 - What is the value of each resistor in Figure 571?...Ch. 5 - Determine VR1, R2, and R3 in Figure 5-72. Figure...Ch. 5 - For the circuit in Figure 573 the meter reads 7.84...Ch. 5 - Determine the current measured by the meter in...Ch. 5 - Refer to Figure 5-75. Assume the green LED drops...Ch. 5 - Refer to Figure 5-76. Assume there is a 2.0 V drop...Ch. 5 - Series aiding is a term sometimes used to describe...Ch. 5 - The term series opposing means that sources are in...Ch. 5 - Determine the total source voltage in each circuit...Ch. 5 - Prob. 32PCh. 5 - Five resistors are in series with a 20 V source....Ch. 5 - Determine the unspecified voltage drop(s) in each...Ch. 5 - In the circuit of Figure 5-79, determine the...Ch. 5 - Find R1, R2, and R3 in Figure 580. Figure 580Ch. 5 - Determine the voltage across R5 for each position...Ch. 5 - The total resistance of a circuit is 560 . What...Ch. 5 - Determine the voltage between points A and B in...Ch. 5 - Determine the voltage with respect to ground for...Ch. 5 - Determine the minimum and maximum voltage from the...Ch. 5 - What is the voltage across each resistor in Figure...Ch. 5 - Prob. 44PCh. 5 - If there are 10 V across R1 in Figure 5-86, what...Ch. 5 - Prob. 46PCh. 5 - Prob. 47PCh. 5 - Five series resistors each handle 50 mW. What is...Ch. 5 - If you double the voltage across a resistor, by...Ch. 5 - If the total resistance of a circuit is halved,...Ch. 5 - What is the total power in the circuit in Figure...Ch. 5 - The following W resistors are in series: 1.2 k,...Ch. 5 - Find RT in Figure 587.Ch. 5 - A certain series circuit consists of a W...Ch. 5 - Determine the voltage at each point with respect...Ch. 5 - In Figure 589, how would you determine the voltage...Ch. 5 - Determine the voltage at each point with respect...Ch. 5 - In Figure 589, what is VAC?Ch. 5 - In Figure 589, what is VCA?Ch. 5 - A string of five series resistors is connected...Ch. 5 - By observing the meters in Figure 590, determine...Ch. 5 - What current would you measure in Figure 590(b) if...Ch. 5 - Table 52 shows the results of resistance...Ch. 5 - You measure 15 k between pins 5 and 6 on the PC...Ch. 5 - In checking out the PC board in Figure 591, you...Ch. 5 - The three groups of series resistors on the PC...
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