certification
What is the binary number for a decimal number 6
01012
When using an ESD wrist strap, a technician should ensure that its ohmic value is
1 meg
The +5v level of a TTL digital signal is also most frequently called a logical
1 or high
Adding binary numbers 1101112 and 0011012 will result in which of the following
10001000 2
Convert 1110012 to Gray code
100101
Convert 7610 to binary
10011002
Convert 164 10 to binary
101001002
what number is the pin designated by the arrow in the figure below
12
Common logic probe cannot operate with collages exceeding approximately
15
What is the modulus of a four-bit binary counter
16
Convert 101112 to decimal
2310
Convert 62210 to hexadecimal
26E16
How many FFS (Flip Flops) are required to count down from 1510
4
Hexadecimal 2E is equivalent to a decimal number of
46
In the number 6178.0, what is the most significant digit (MSD)
6 OR -6
What is the radix or base of the octal number system
8
The boolean equation below describes which of the following circuits
A single inverted
Three common computers bus types are
Address bus, data bus and control bus
what work surfaces presents an opportunity for electrostatic discharge (ESD) damage
All of the above.
The "ASCII" acronym stands fir
American standard Code for information interchange.
Which component of a computer microprocessor performs simple logic functions such as AND. OR and exclusive or
Arithmetic logic unit
A programmable logic controller (PLC), or programmable controller, is a digital computer used primarily for.
Automation of industrial processes
Which of the gates in the figure below is a NOT logic gate
B
____Diagrams are the most convenient from which to learn the basic functions of a circuit.
Block or single line
A blocking oscillator uses ___ renege rative feedback
Capacitive
ASCLL is a process of
Char cater encoding based on the English alphabet.
The number of ____determines the numbers of pulses required to cycle a counter from 0-
Count to 0- count- Stages
What other name is a Gray Code known as
Cyclic Code
When replacing a DIP chip, use an
ESD static grounded soldering pencil and work station.
The first recognized electronic computer was built in 1948,and was known as the
FNIAC
Block diagrams show the components in symbolic form .
False
Higher relative humidity will lower the danger of ESD
False
What are the three basic requirements for a timing pulse.
Flat rise time, flat top, and fast fall time.
The asynchronous communications interface adapter used in computer converts
In out serial data into parallel format for use by the microprocessor
What CPU function interfaces the computer with the peripheral.
Input/output
An advantage is using an EAROM memory chip instead of an EPROM is that the EAROM
Needs a strong ultraviolet light to erase the memory
What is the unique characteristics of Gray code
Only one digit changes value when proceeding from one number to the next successive number
A logic pulse can be used as a
Pulse re generator
What are the 3 important features of any number system
Radix, MSD, and LSD
What is the basic type of (replaceable) memory you will find in standard desktop computers
Ram
When counters are referred to according to circuit design, they are called
Ripple or synchronous
The circuit in the figure below is a/an
S-C flip flop
When discussing ESD control, the resistance in the benchtop ground cable should be located at or near the point of contact with the benchtop
TOP
A three input NAND has two low inputs and a high input
The output will be-high
What happens to the net value of the power when the exponent increases by 1 in the Base two system.
The weight of the number doubles A
What happens to the power when the negative exponent decreases by 1 (from 2^-2 to 2^-3)
The weight of the numbers is halved
Why are differentiation used as part of digital input circuitry
To produce a square wave
why are differentiators used as part of digital input circuitry
To produce a square wave.
Data buses are used for
Transferring digital information.
The main component in an inverted circuit is the
Transistor
A precautionary step to take when using a logic probe, is to never apply the leads of the probe to an AC source
True
A serial peripheral interface enables intercommunications between two or more micro controllers
True
Test points provide a means for conveniently and safely determining the operations status of equipment and for isolating malfunctions.
True
Extended binary coded decimal interchange code (EBCDIC) IS A/ An
bit character encoding 8
What type of diagram is the most useful in learning the detailed component operation of a system
block
A logic pulse creates a timed pulse to
check the operation of digital circuit
The logic NOT symbol is also called a/an
inversion
The Arithmetic logic unit is the element of the entire
microprocessor
What is another name for a serial in/ serial-out register
shift register
