1Small piece of semiconductor material where an entire circuit can be fabricated.
Chip
2Circuit fabricated on a chip surface, consisting of transistors, diodes, and resistors.
Integrated Circuit (IC)
3Circuit with individually connected components during assembly.
Discrete Circuit
4Type of IC integration with fewer than 12 gates per chip.
Small-Scale Integration (SSI)
5IC type with 12 to 100 gates per chip.
Medium-Scale Integration (MSI)
6IC type with more than 100 gates per chip.
Large-Scale Integration (LSI)
7Technology that fabricates bipolar transistors on a chip and is preferred for SSI and MSI.
Bipolar Technology
8Technology that fabricates MOSFETs and dominates the LSI field.
MOS Technology
9Group of compatible devices with same logic levels and supply voltages.
Digital Family
10Logic family that uses diodes and transistors but is now obsolete.
DTL (Diode-Transistor Logic)
11TTL stands for what?
Transistor-Transistor Logic
12Logic family known as the fastest, used in high-speed applications.
ECL (Emitter-Coupled Logic)
13MOS family type that uses p-channel MOSFETs and is the oldest.
PMOS
14MOS family that uses n-channel MOSFETs, dominant in microprocessors.
NMOS
15MOS family using both n- and p-channel MOSFETs in push-pull arrangement.
CMOS
16Year the TTL 7400 series was introduced by Texas Instruments.
1964
17Original TTL design with multiple-emitter input transistor and totem-pole output.
Standard TTL
18Output connection where one transistor is on at a time, providing low output impedance.
Totem-Pole Connection
19Power dissipation of a standard TTL gate.
10 mW
20Propagation delay time of a standard TTL gate.
10 ns
21TTL number for a quad 2-input NAND gate.
7400
22TTL number for a quad 2-input NOR gate.
7402
23TTL number for a hex inverter.
7404
24TTL number for a quad 2-input AND gate.
7408
25TTL number for a quad 2-input XOR gate.
7486
26TTL series for military use with wider temperature range.
5400 Series
27TTL type with 22 mW power and 6 ns propagation delay.
High-Speed TTL (74H00)
28TTL type with 1 mW power and 35 ns propagation delay.
Low-Power TTL (74L00)
29TTL type with Schottky diode per transistor and 3 ns delay.
Schottky TTL (74S00)
30TTL type considered the best balance between low power and high speed.
Low-Power Schottky TTL (74LS00)
31Maximum low-level input voltage (VIL) for TTL.
0.8 V
32Minimum high-level input voltage (VIH) for TTL.
2 V
33Low output voltage (VOL) for TTL.
0.4 V
34High output voltage (VOH) for TTL.
2.4 V
35Noise margin for TTL devices.
0.4 V
36Standard TTL fanout value.
10
37Floating input in TTL acts as what logic level?
HIGH
38When TTL output is low, it is said to be doing what process?
Sinking
39When TTL output is high, it is said to be doing what process?
Sourcing
40Device that isolates two circuits and provides high input impedance and low output impedance.
Buffer
41TTL chip that converts decimal to BCD.
74147
42TTL chip that decodes 4-bit binary to 1-of-16 outputs.
74154
43TTL chips 7446 and 7447 are used for what kind of display?
Seven-Segment Display
44TTL device that cleans up ragged pulses and produces rectangular outputs.
Schmitt Trigger
45Gate type that serves as the backbone of the 7400 series.
NAND Gate
46TTL gate type not available with 8-input configuration.
NOR Gate
47Logic circuit type with the equation Y = AB + CD (with inversion).
AND-OR-INVERT Gate
48TTL number for a dual 2-input 2-wide AND-OR-INVERT gate.
7451
49TTL output type requiring an external pull-up resistor.
Open-Collector Gate
50TTL circuit type with many inputs but only one output, controlled by selection signals.
Multiplexer
51What is the smallest unit of data in binary?
Bit
52What is a group of 8 bits called?
Byte
53What is 4 bits called?
Nibble
54What does logic level represent?
Voltage representing binary 0 or 1
55What shows all possible input/output combinations of a logic circuit?
Truth Table
56What is the base-2 number system using digits 0 and 1?
Binary
57What is the base-8 number system using digits 0–7?
Octal
58What is the base-10 number system using digits 0–9?
Decimal
59What is the base-16 number system using digits 0–9 and letters A–F?
Hexadecimal
60What code represents each decimal digit by 4 bits?
BCD (Binary Coded Decimal)
61Which code changes only one bit between successive numbers?
Gray Code
62What standard represents text characters in binary?
ASCII
63What is an extra bit used for error detection?
Parity Bit
64What performs logical operations on binary inputs?
Logic Gate
65What is the mathematical system for analyzing logic circuits?
Boolean Algebra
66When is the output of an AND gate 1?
Only if all inputs are 1
67When is the output of an OR gate 1?
If at least one input is 1
68What does a NOT gate output?
The complement of the input
69When is the output of a NAND gate 0?
Only if all inputs are 1
70When is the output of a NOR gate 1?
If all inputs are 0
71When is the output of an XOR gate 1?
If inputs are different
72When is the output of an XNOR gate 1?
If inputs are the same
73What theorem simplifies complemented logic expressions?
De Morgan’s Theorems
74What circuit’s output depends only on current inputs?
Combinational Circuit
75What circuit’s output depends on current and previous states?
Sequential Circuit
76What device stores one bit and is bistable?
Flip-Flop
77What memory element holds a state?
Latch
78What is a group of flip-flops used to store data?
Register
79What sequential circuit counts pulses?
Counter
80What moves data bits left or right per clock pulse?
Shift Register
81What circuit performs binary addition?
Adder
82What circuit performs binary subtraction?
Subtractor
83What performs arithmetic and logical operations in the CPU?
ALU
84What flag indicates overflow during addition?
Carry Flag
85What flag is set when the result is zero?
Zero Flag
86What flag indicates if the result is positive or negative?
Sign Flag
87What flag detects arithmetic overflow?
Overflow Flag
88What is volatile memory for temporary data storage?
RAM
89What is non-volatile memory for permanent storage?
ROM
90What type of RAM uses flip-flops and is fast but costly?
SRAM
91What type of RAM uses capacitors and is cheaper but slower?
DRAM
92What programmable ROM can be written once?
PROM
93What type of ROM is erasable using UV light?
EPROM
94What type of ROM is electrically erasable?
EEPROM
95What is high-speed memory between CPU and RAM?
Cache Memory
96What is a CPU on a single chip that executes instructions?
Microprocessor
97What is a processor with RAM, ROM, and I/O on one chip?
Microcontroller
98What is an 8-bit microprocessor by Intel?
8085
99What is a 16-bit microprocessor by Intel?
8086
100What holds the address of the next instruction?
Program Counter
101What points to the top of the stack memory?
Stack Pointer
102What stores status flags after operations?
Flag Register
103What provides timing pulses for synchronization?
Clock
104What is a command executed by the CPU?
Instruction
105What is the binary representation of an instruction?
Opcode
106What is the data or address used by an instruction?
Operand
107What defines how operands are accessed?
Addressing Mode
108What is a low-level language using mnemonics?
Assembly Language
109What transfers data between CPU, memory, and I/O?
Bus
110What bus transfers actual data?
Data Bus
111What bus specifies address locations?
Address Bus
112What bus carries control signals?
Control Bus
113What is an interface for external input/output devices?
I/O Port
114What prevents bus conflict between devices?
Tri-State Buffer
115What converts binary input into specific outputs?
Decoder
116What converts analog signals to digital form?
ADC
117What converts digital signals to analog form?
DAC
118What defines the precision of conversion?
Resolution
119What is the frequency of analog-to-digital sampling?
Sampling Rate
120What is an external device connected to the CPU?
Peripheral
121What transfers data directly between memory and device?
DMA
122What overlaps instruction execution for faster performance?
Pipelining
123What uses disk space as additional memory?
Virtual Memory
124What stores frequently accessed data temporarily?
Cache
125What executes tasks simultaneously using multiple CPUs?
Parallel Processing
126What pauses the CPU to handle external or internal events?
Interrupt
127What tests high or low logic levels?
Logic Probe
128What displays electrical waveforms?
Oscilloscope
129What monitors multiple digital signals?
Logic Analyzer
130What detects and identifies faults?
Diagnostic Software