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ECE Electronic Systems and Technologies (EST) Review

Super Tutor TeamUpdated April 26, 20266 min read

ECE Electronic Systems and Technologies (EST) Review

ECE Day 3 covers EST: communications systems, networks, microwave, optical fiber, power electronics, computer systems.

What PRC asks

Topic blockApprox. items
Analog communications systems12
Digital communications systems15
Telecoms networks12
Microwave + satellite communications10
Optical fiber communications10
Computer systems10
Industrial electronics8
Power electronics8
Microprocessors + microcontrollers8
Acoustics4
Broadcasting3

Analog communications

  • AM systems (DSB, SSB, VSB)
  • FM systems (NBFM, WBFM)
  • Receiver architectures (TRF, superheterodyne)
  • Noise analysis

Digital communications

  • Sampling, quantisation, encoding
  • PCM, DM, ADM
  • Digital modulation (BPSK, QPSK, M-PSK, M-QAM)
  • Channel capacity (Shannon)
  • Bit error rate analysis
  • Forward error correction (Hamming, Reed-Solomon, convolutional)

Telecoms networks

  • OSI model layers
  • LAN, MAN, WAN
  • TCP/IP protocol suite
  • Switching (circuit vs packet)
  • Cellular networks (2G/3G/4G/5G principles)

Microwave + satellite

  • Microwave frequencies, propagation
  • Microwave components (waveguides, isolators)
  • Satellite communications: transponders, link budget
  • Geostationary vs LEO satellites

Optical fiber

  • Light propagation in fiber
  • Fiber types (SMF, MMF)
  • Attenuation + dispersion
  • Optical sources (LED, laser diodes)
  • Optical detectors (photodiodes)
  • WDM, DWDM

Computer systems

  • Computer architecture basics
  • Memory hierarchy
  • Operating systems basics
  • Network architectures

Industrial electronics

  • Sensors + transducers
  • PLCs (programmable logic controllers)
  • Motor control
  • Process control

Power electronics

  • Diodes, thyristors, IGBTs in power applications
  • Rectifiers (single-phase, three-phase)
  • Inverters
  • Choppers, regulators

Microprocessors + microcontrollers

  • 8085, 8086 architecture (legacy basics)
  • ARM architecture basics
  • Programming, addressing modes
  • Interface, peripherals

A 6-week drilling plan

WeekFocusVolume target
1Analog + digital communications80 problems
2Telecoms networks + cellular60 problems
3Microwave + satellite + optical fiber80 problems
4Computer systems + microprocessors60 problems
5Industrial + power electronics60 problems
6Mixed mock + remediation1 mock + 60 problems

Realistic scores

Diagnostic baselineRealistic test-day score
50%70%
60%78%
70%84%

Where Super Tutor fits

Super Tutor's ECE track covers EST.

What to read next

The ECE 2026 pillar guide covers the full review.

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ECEElectronicsTelecomsMicrowave2026