DPI & PPI
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Definisi
DPI (titik per inci) mengukur resolusi keluaran cetak; PPI (piksel per inci) mengukur resolusi tampilan layar — keduanya menggambarkan kerapatan spasial elemen gambar.
Penjelasan
Print at 300 DPI is considered photo quality; newspaper print runs at 85–150 DPI. Apple coined 'Retina display' for screens above ~300 PPI, where individual pixels become imperceptible at normal viewing distance. The iPhone 15 Pro screen is 460 PPI. Confusingly, 'DPI' is widely misused to mean PPI in software settings—they are conceptually distinct but numerically interchangeable in digital-to-print workflows.
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RELATED TERMS
Bit dan Byte
Bit adalah satuan terkecil informasi digital, mewakili 0 atau 1; byte adalah kelompok 8 bit yang mampu mewakili 256 nilai berbeda.
Prefiks Biner
Prefiks biner (KiB, MiB, GiB) menyatakan pangkat 1024, berbeda dengan prefiks metrik SI (KB, MB, GB) yang menyatakan pangkat 1000.
Bandwidth
Kapasitas transfer data maksimum suatu saluran komunikasi, biasanya diukur dalam bit per detik (bps, Mbps, Gbps).
Latensi
Penundaan waktu antara pengiriman paket data dari sumber hingga diterima di tujuan, biasanya diukur dalam milidetik (ms).
Throughput
Laju aktual di mana data berhasil ditransfer melalui jaringan atau sistem dalam periode waktu tertentu, diukur dalam bit atau byte per detik.