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Gravity
Terms in this set (30)
Converting to binary
Divide number by two until it goes into 2 zero times. top->bottom = right->left
Binary addition
Like regular addition but 1+1 = 0 r 1
Amdahl's law
1/[(1-P)+(P/S)]
Maximum quantization error
step size/2
1 bit increase in sample = ? increase in SQNR?
1 bit -> 6dB increase (6 dB rule)
optimum antenna length
ground plane = λ/4
no ground plane = λ/2
cos(a)cos(b) =
1/2(cos(b+a) + cos(b-a))
16-ary QAM
Can send 4x1 bits for same bandwidth
First order differential equation model parameters
If a > 0 system is stable
Second order differential equation parameters
Only stable if both a1 and a2 > 0
Does not oscillate if a1^2 > a2
Speed of sound
In air: 340 m/s
In tissue: 1540 m/s
Time delay between transmission and reception of ultrasound
T = 2(d/c_s)
Doppler shift
V = (f_d/2f_0)c_s
Voltage Divider
Vout = Vin (R2/(R1+R2))
Inverting op amp
Vout/Vin = -R2/R1 (gain)
Differentiator
Uses resistor w/ op amp
Integrator
Uses capacitor w/ op amp
Intrinsic noise
Thermal, Short (current fluct), Burst (metal impure), 1/f (imperfect contact conducting)
MRAM
Megnetoresistive Random-Access Memory
Change orientation of layers to be high or low resistance, magnetic
PCM
Phase Change Memory
Crystalline<->Amorphous Phases by heat, uses alloy
RRAM
Memristor; Memory Resistor
Electrodes with switching material inbetween, doped, electrons
positive resist
is exposed to UV light where it is to be removed
negative resist
is exposed to UV light where it must stay
Security Properties
CIAA: Confidentiality, Integrity, Authenticity and non-repudiation, Availability
AES
Advanced Encryption Standard
Op Amp w/ adder Eqns
I1 + I2 = I3
(Vin1-V-)/R1 + (Vin2-V-)/R2 = (V--Vout)/R3
Vout = -Vin1R3/R1 - Vin2R3/R2
Op Amp Eqns
R1: I=(Vin-V-)/R1=Vin/R1
R2: I=(V--Vout)/R2=-Vout/R2
First order differential
y'(t) + ay(t) = x(t)
Second order differential
y''(t) + 2a_1y'(t) + a_2y(t) = x(t)
Basic Formulas
V=IR
P=IV
f=v/λ
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