• Selamat Datang di YESCOM.ID
  • Datang juga ke Showroom Yescom untuk ikutan in-store promo nya ya!
  • Promo Terbaru! BACK TO SCHOOL ! banyak potongan Harga untuk Laptop !

Yescom Indonesia - Pusat IT Terpercaya sejak 2011

NEW ARRIVALS!

Produk-produk terupdate nihh.. Jangan sampai kelewatan yaa guys!

Diskon
6%

Projector ACER X1 | 4000 Ansi Lumens | XGA (1024×768) | TKDN

Acer Projector X1 Brand : Acer Native Resolution : 1024 x 768 Maximum Resolution : 1920 x 1200 Standard Mode Brightness : 4000 lm Native Aspect Ratio : 4:3 Compatible Aspect Ratio : 16:9 Contrast Ratio : 20,000:1 Throw Ratio : 1.96 to 2.15 (1270 mm@2000 mm) Digital Zoom : 2x Vertical Keystone Correction :…

Rp 5.665.000 Rp 6.000.000
Tersedia
Diskon
3%

INFOCUS IN2126A Projector

Brightness 3,500 Lumens (ANSI)1 / 3,200 Lumens (Eco) Resolution 1280×800 Aspect Ratio 16:10 (WXGA) Contrast 15,000:1 (full on/off) Display Type 0.60″ DLP x 1 Color Wheel 6 segments Color Wheel 2x speed Color Processing 10-bit Video Modes 720p, 1080i, 1080p/60, 576i, 576p, 480p, 480i Data Modes MAX 1920×1200 3D Modes PC 3D Ready [Glasses Type: Shutter] Lamp Type 240W…

Rp 12.650.000 Rp 13.000.000
Tersedia
Diskon
4%

INFOCUS Projector IN114AA WHITE

Sistem Projector Texas Instruments DLP® technology Brightness 3800 Lumens Resolusi Native XGA (1024 x 768) Maks. Resolusi 1920 x 1200 Rasio Aspek 4:3 Rasio Kontras 30000:1 Input VGA, S-VIDEO, HDMI 1.4, Audio 3.5 mm Output Audio 3.5 mm Tipe Lampu UHP Lamp Daya / Power 100-240V, 50-60Hz Konsumsi Daya 267W (Max) 210W (Min) Dimensi Produk…

Rp 5.280.000 Rp 5.500.000
Tersedia
Diskon
4%

INFOCUS Projector IN2115

Sistem Projector Texas Instruments DLP® technology Brightness 3800 Lumens Resolusi Native XGA (1024 x 768) Maks. Resolusi 1920 x 1200 Rasio Aspek 4:3 Rasio Kontras 30000:1 Input Mini D-sub 15-pin (VGA) S-Video HDMI™ 1.4 3.5 mm Stereo Mini Jack Output 3.5 mm Stereo Mini Jack Powered USB-A for Wireless Dongle Tipe Lampu UHP Lamp Konsumsi…

Rp 6.215.000 Rp 6.500.000
Tersedia
Diskon
4%

INFOCUS Projector IN114AA BLACK

Sistem Projector Texas Instruments DLP® technology Brightness 3800 Lumens Resolusi Native XGA (1024 x 768) Maks. Resolusi 1920 x 1200 Rasio Aspek 4:3 Rasio Kontras 30000:1 Input VGA, S-VIDEO, HDMI 1.4, Audio 3.5 mm Output Audio 3.5 mm Tipe Lampu UHP Lamp Daya / Power 100-240V, 50-60Hz Konsumsi Daya 267W (Max) 210W (Min) Dimensi Produk…

Rp 5.280.000 Rp 5.500.000
Tersedia
Diskon
2%

ADVAN 360 Stylus Pro | Laptop 2 in 1 | Intel Core i3-1215U | 14″ inch IPS FHD Touchscreen | 8GB | 256GB | Windows 11

Spesifikasi : Dimension : 315.6 x 229 x 18.9 mm Weight : ≤1.5kg Display : 14.0″ FHD IPS 1920 x 1200 16:10 CPU : Intel Core i3-1215U GPU : Intel UHD Graphics Memory : 8GB DDR4 Storage : 256GB PCIe 3.0 Camera : 720 HD with privacy shutter WiFi : 802.11 b/g/n/ac 2.4GHz/5GHz Bluetooth :…

Rp 6.850.000 Rp 7.000.000
Tersedia
Diskon
2%

Advan Workplus | Ryzen 7-7735HS | 16GB | 512GB SSD | 14″ FHD IPS | Win 11 Home | Silver Advan

Processor : AMD Ryzen™ 7 7735HS Processor 8 cores, Max Boost Clock 4.75 GHz Display : 14′ inch 16:10 FHD 1920*1080 IPS Memory : 16GB DDR5, Onboard Storage : SSD 512GB NVMe PCIE 3.0, Upgradable (Free 1 Slot SSD) Graphic Card : AMD Radeon Graphics Keyboard : Backlit, 1.4 mm Travel Distant, Fingerprint (yes) WIFI…

Rp 9.115.000 Rp 9.300.000
Tersedia
Diskon
3%

Advan Workplus | Ryzen 5-6600H | 16GB | 512GB SSD | 14″ FHD IPS | Win 11 Home | Silver

Processor : AMD Hexa Core Ryzen 5 6600H Up To 4,5Ghz 6 Core 12 Threads Display : 14′ inch 16:10 FHD 1920*1080 IPS Memory : 16GB DDR5, Onboard Storage : SSD 512GB NVMe PCIE 3.0, Upgradable (Free 1 Slot SSD) Graphic Card : AMD Radeon Graphics Keyboard : Backlit, 1.4 mm Travel Distant, Fingerprint (yes)…

Rp 7.195.000 Rp 7.400.000
Tersedia
Diskon
7%

Advan WorkPro | Core i5-1035G7 | 8GB | 256GB SSD | 14″ FHD IPS | Win 11 Home | Grey

Processor : Intel® Ice Lake-U i5-1035G7 Processor (6M Cache, up to 3.70 GHz) Display :14” 16:10 FHD 1920*1200 IPS Ram : 8GB DDR4 SODIMM, upgradable Storage: 256GB M.2 2280 Sata/PCIe4.0 upgradable Graphics : Intel integrated graphics Keyboard : Chicklet Keyboard Connection : 802.11 b/g/n/ac/ax, Bluetooth Port Interfice : 1x USB Type C 3.2 Gen1 (PD/DP/Charger/Data);…

Rp 5.110.000 Rp 5.500.000
Tersedia
Diskon
4%

Advan Workpro Lite (FHD) | Intel Core i3 | 14″ | 8GB | 256GB | Windows 11

Spesifikasi : Dimension : 322.6*210.2*19.8mm Weight : ≤1.5kg Display : 14.0″(16:9) HD TN 1366*768 CPU : Intel® Core i3-1220P / Intel® Core i5-12450h GPU : Intel® UHD Graphics Memory : 8GB DDR4 3200 Storage : 256GB PCIe 3.0 Camera : 720 HD with privacy shutter Wifi 802.11b/g/n/ac Bluetooth 5.1 Battery : 7.6V/ 6000mAh 45.6Wh  …

Rp 4.785.000 Rp 5.000.000
Tersedia
Diskon
7%

Advan TBook X Transformer Intel N100 | 4GB | 128GB | 14″ HD

Spesifikasi : · Size : 322.6×210.2×19.8mm · Weight : <1,5kg · Display : HD TN 1366×768 · CPU : Intel® Alder Lake-N N100 · GPU : Intel® UHD Graphics · Memory : 4GB DDR4 · Storage : 128EMMCxSata · Camera : 720p HD Camera · Network : Wifi a/b/g/n/ac · Bluetooth : 4.2v · Battery…

Rp 3.152.000 Rp 3.400.000
Tersedia
Diskon
17%

ADVAN XTAB | 4 GB | 64 GB | 8 Inci Quadcore T310 | Tablet Android 13

Advan XTAB adalah tablet yang bisa diandalkan setiap saat. Dengan RAM 4 GB dan internal memory 64 GB yang dapat ditambah external memory up to 128 GB serta didukung baterai 4000 mAh, tablet 8 inci ini dapat digunakan sekolah online, meeting, berain game atau mengerjakan banyak hal. Terdapat kamera belakang dan kamera depan, selain itu…

Rp 1.240.000 Rp 1.500.000
Tersedia
Diskon
8%

Epson Projector EB X51 XGA + 3800 Lumens + 3LCD Technology

BRAND : EPSON SERIES : EB-X51 XGA PROJECTION : 3 LCD TECHNOLOGY WHITE LIGHT OUTPUT (NORMAL/ECO) : 3,800 Lumens COLOUR LIGHT OUTPUT : 3,800 Lumens USB INTERFACE : USB Type A: 1, USB Type B: UANALOG INPUT : D-Sub 15pin, RCA DIGITAL INPUT : HDMI: 1

Rp 7.370.000 Rp 8.000.000
Tersedia
Diskon
12%

Canon PIXMA G3010 InkTank All In One Printer | Print, Scan, Copy, Wifi

Canon PIXMA G3010 InkTank All In One Printer | Print, Scan, Copy, Wifi PIXMA G3010 BRAND : CANON SERIES : PIXMA G3010 PLATFORM : Ink Tank CONSUMABLES : 790 (BLACK), 790 (COLOR) MAX PRINT RESOLUTION : 4800 (horizontal)*1 x 1200 (vertikal) dpi MAX PAPER PRINT SIZE : Pencetakan Batas Tepi: Hingga 203,2 mm (8 inci),…

Rp 2.475.000 Rp 2.800.000
Tersedia
Diskon
3%

Lenovo V14 G3 – APID (Iron Grey) Intel® Core™ i5-1235U|8GB|512GB|Intel® Iris® Xe Graphics|Windows 11 Home + OHS 2021

BRAND : LENOVO TYPE & MTM : Lenovo V14 G3 IAP 82TS00APID PROCESSOR : Intel® Core™ i5-1235U, 10C (2P + 8E) / 12T, P-core 1.3 / 4.4GHz, E-core 0.9 / 3.3GHz, 12MB GRAPHICS : Integrated Intel® Iris® Xe Graphics Functions as UHD Graphics MEMORY (RAM) : 8GB Soldered DDR4-3200 MAX MEMORY : Up to 16GB…

Rp 8.745.000 Rp 9.000.000
Tersedia

Canon Cartridge CL-811 Colour

Kesesuaian / Kecocokan IP2770, IP2772, MP245, MP258, MP268, MP276, MP287, MP486, MP496, MP497, MX328, MX338, MX347, MX357, MX366, MX416, MX426

Rp 308.000
Tersedia
Diskon
1%

Lenovo K14 Gen 1 Intel – 5500 (Black) i5-1135G7 | 8GB | 512GB | Intel® Iris® Xe | Windows 11 Home

BRAND : LENOVO TYPE & MTM : Lenovo K14 Gen 1 (Intel) – 21CSS05500 PROCESSOR : Intel® Core™ i5-1135G7 (4C / 8T, 2.4 / 4.2GHz, 8MB) GRAPHICS : Integrated Intel® Iris® Xe Graphics Functions as UHD Graphics MEMORY (RAM) : 1x 8GB SO-DIMM DDR4-3200 MAX MEMORY : Up to 32GB (2x 16GB SO-DIMM) DDR4-3200 offering…

Rp 10.945.000 Rp 11.000.000
Tersedia
Diskon
4%

Asus ExpertBook B1400CEAE-EK3454T (Star Grey) Intel Core i3-1115G4 + SSD 512GB + Windows 10

B1400CEAE-EK3454T BRAND : ASUS TYPE & MTM : B1400CEAE-EK3454T PROCESSOR : Intel® Core™ i3-1115G4 Processor 1.7-3.0 GHz (6M Cache, up to 4.1 GHz) GRAPHICS : Intel® UHD Graphics MEMORY (RAM) : 4GB MAX MEMORY : Memory Max Up to:32GB STORAGE : 512GB SSD AUDIO CHIP : Built-in array microphone with Cortana support SPEAKERS : Built-in…

Rp 7.040.000 Rp 7.360.000
Tersedia
Diskon
7%

Advan WorkPro (Grey) Intel® Ice Lake-U i5-1035G7|8GB|256GB|Intel integrated graphics|Windows 11 Home

Advan WorkPro (Grey) Advan WorkPro BRAND : ADVAN TYPE & MTM : Advan WorkPro PROCESSOR : Intel® Ice Lake-U i5-1035G7 GRAPHICS : Intel® Iris Plus Graphics MEMORY (RAM) : 8GB DDR4 SODIMM upgradable MAX MEMORY : STORAGE : 256GB M.2 2280 Sata/PCIe4.0 replace upgradable AUDIO CHIP : SPEAKERS : 2x box speakers 4Ω 2W CAMERA…

Rp 5.110.000 Rp 5.500.000
Tersedia

Tinta Epson T664 Black / Cyan / Magenta / Yellow

Tinta L-Series Original untuk printer Epson yang menggunakan tinta seri T664 for Epson : L100/L110/L120 L200/L210/L220 L300/L310/L350 L355/L360/L455 L550/L555/L565/L1300 Kapasitas: 70ml

*Harga Mulai
Rp 90.000
Tersedia
Diskon
1%

Lenovo IdeaPad 3 – HNID (Arctic Grey) AMD Ryzen™ 7 5700U|8GB|512GB|AMD Radeon™ Graphics|Windows 11 Home + OHS 2021

BRAND : LENOVO TYPE & MTM : IdeaPad 3 14ALC6 – 82KT00HNID PROCESSOR : AMD Ryzen™ 7 5700U (8C / 16T, 1.8 / 4.3GHz, 4MB L2 / 8MB L3) GRAPHICS : Integrated AMD Radeon™ Graphics MEMORY (RAM) : 4GB Soldered DDR4-3200 + 4GB SO-DIMM DDR4-3200 MAX MEMORY : Up to 12GB (4GB soldered + 8GB…

Rp 9.075.000 Rp 9.200.000
Tersedia
Diskon
5%

ASUS VIVOBOOK GO A1402ZA – VIPS751 (Quiet Blue) Core™ i7-1260P |8GB DDR4 |512GB M.2 NVMe |Intel® UHD Graphics |Windows 11 Home |Office Home and Student 2021

A1402ZA – VIPS751 BRAND : ASUS TYPE & MTM : A1402ZA – VIPS751 PROCESSOR : Intel® Core™ i7-1260P Processor 2.1 GHz (18M Cache, up to 4.7 GHz, 4P+8E cores) GRAPHICS : Intel® UHD Graphics MEMORY (RAM) : 8GB DDR4 on board MAX MEMORY : 1x DDR4 SO-DIMM slot STORAGE : 512GB M.2 NVMe™ PCIe® 3.0 SSD AUDIO CHIP : SonicMaster SPEAKERS : Built-in speaker CAMERA : 720p HD…

Rp 11.220.000 Rp 11.800.000
Tersedia

Tinta Epson 003 Black / Cyan / Magenta / Yellow

Kesesuaian / Kecocokan : Epson L1110/L3110/L3150/L5190/L3210 Isi: 65ml

*Harga Mulai
Rp 90.000
Tersedia
Diskon
4%

ASUS VivoBook 14 A1402ZA-IPS753 (Icelight Silver) Intel® Core™ i7-1260P|8GB|512GB|Intel® UHD Graphics|Windows 11 Home + OHS 2021

ASUS VivoBook 14 A1402ZA-IPS753 (Icelight Silver) BRAND : ASUS TYPE & MTM : A1402ZA-IPS753 PROCESSOR : Intel® Core™ i7-1260P Processor 2.1 GHz (18M Cache, up to 4.7 GHz, 4P+8E cores) GRAPHICS : Intel® UHD Graphics MEMORY (RAM) : 8GB DDR4 on board MAX MEMORY : 16GB DDR4 STORAGE : 512GB M.2 NVMe™ PCIe® 3.0 SSD…

Rp 11.550.000 Rp 12.000.000
Tersedia
Diskon
10%

Lenovo LOQ 15IRX9-83DV00AHID (Luna Grey) Intel® Core™ i7-13650HX|12GB|512GB|NVIDIA® GeForce RTX™ 4050 6GB GDDR|15.6″ FHD IPS 144Hz|Windows 11 Home + OHS 2021

Lenovo LOQ 15IRX9-83DV00AHID (Luna Grey) LOQ 15IRX9-83DV00AHID – Luna Grey BRAND : LENOVO TYPE & MTM : LOQ 15IRX9-83DV00AHID – Luna Grey PROCESSOR : Intel® Core™ i7-13650HX, 14C (6P + 8E) / 20T, P-core 2.6 / 4.9GHz, E-core 1.9 / 3.6GHz, 24MB GRAPHICS : NVIDIA® GeForce RTX™ 4050 6GB GDDR6, Boost Clock 2370MHz, TGP 105W…

Rp 16.275.000 Rp 18.000.000
Tersedia
Diskon
4%

INFOCUS Projector IN2115

Sistem Projector Texas Instruments DLP® technology Brightness 3800 Lumens Resolusi Native XGA (1024 x 768) Maks. Resolusi 1920 x 1200 Rasio Aspek 4:3 Rasio Kontras 30000:1 Input Mini D-sub 15-pin (VGA) S-Video HDMI™ 1.4 3.5 mm Stereo Mini Jack Output 3.5 mm Stereo Mini Jack Powered USB-A for Wireless Dongle Tipe Lampu UHP Lamp Konsumsi…

Rp 6.215.000 Rp 6.500.000
Tersedia

Epson Ink Ribbon Cartridge LQ-310

Ribbon Cartridge Epson LQ-310 adalah Cartridge yang khusus digunakan untuk printer DotMatrix, Ribbon Cartridge ini berbentuk Gulugan Pita dengan tinta yang ada didalamnya Keunggulan Ribbon Cartrdige adalah ketahanannya yang luar biasa. Tinta yang ada didalam Gulungan Ribbon tidak bisa kering sehingga tidak perlu takut walaupun printer jarang digunakan. Perawatannya jangan sampai kotor atau banyak debu…

Rp 71.500
Tersedia
Diskon
5%

Projector Epson EB-W51 WXGA 3LCD

Projection Technology: Projection Technology:RGB liquid crystal shutter projection system (3LCD) Brightness*1: White Light Output (Normal/Eco):4,000 lmColour Light Output:4,000 lm Konektivitas: Antarmuka USB:USB Type A: 1 (For Wireless LAN, Firmware Update, Copy OSD Settings) USB Type B: 1 (For Firmware Update, Copy OSD Settings)Jaringan:Wireless: Optional (ELPAP11)Analog Input:Composite: 1 RCA D-Sub 15pin: 1Digital Input:HDMI: 1Audio Input:2RCA (White…

Rp 9.350.000 Rp 9.800.000
Tersedia
Diskon
3%

Asus Vivobook Go 14 E1404FA FHD3852M | AMD Ryzen 3-7320U | 8GB | 512GB SSD | 14″ FHD | Win 11 Home+OHS 2021+M365

Processor : AMD Ryzen 3 7320U Mobile Processor (4-core/8-thread, 4MB cache, up to 4.1 GHz max boost) Display : 14.0-inch, FHD (1920 x 1080) 16:9 aspect ratio, LED Backlit, 60Hz refresh rate, 250nits, 45% NTSC color gamut, Anti-glare display Memory : 8GB LPDDR5 on board Storage : 512GB M.2 NVMe PCIe 3.0 SSD Graphics :…

Rp 6.705.000 Rp 6.900.000
Tersedia

Canon Cartridge CL-811 Colour

Kesesuaian / Kecocokan IP2770, IP2772, MP245, MP258, MP268, MP276, MP287, MP486, MP496, MP497, MX328, MX338, MX347, MX357, MX366, MX416, MX426

Rp 308.000
Tersedia
Diskon
21%

HP Printer Smart Tank 580 AIO Wireless (Print – Scan – Copy) SmartTank 585 All In One

Spesifikasi : Print, Scan, Copy & Wireless Print speed (ISO): Up to 12/5 ppm (Blk/Clr)4 1.2” icon display with guided backlit ID Copy Button Up to 12000 black or 6000 color pages1 Self-healing single-band Wi-Fi with BLE3 Made up of 45% recycled plastic5 Duty cycle: Up to 30000 pages Borderless printing Input capacity: 100-sheet Low…

Rp 2.300.000 Rp 2.900.000
Tersedia

Cartridge Ink CANON PGI 820 Black

Canon PGI-820 Cartridge Tinta Printer – Hitam ini berisi tinta berkualitas tinggi yang tidak mudah pudar dan tahan noda. Dengan menggunakan teknologi terbaru, membuat tinta ini dapat menghasilkan hasil cetakan yang profesional untuk mencetak dokumen keperluan sekolah, kantor, dll. Dapatkan hasil cetak yang memuaskan dengan kecepatan tinggi dari tinta printer persembahan Canon yang satu ini…

Rp 165.000
Tersedia
Diskon
5%

Canon PIXMA G3730 InkTank All In One Printer | Print, Scan, Copy, Wifi

Canon PIXMA G3730 InkTank All In One Printer | Print, Scan, Copy, Wifi PIXMA G3730 BRAND : CANON SERIES : PIXMA G3730 PLATFORM : Ink Tank CONSUMABLES : GI-71s(BLACK & COLOR), GI-71(BLACK & COLOR) MAX PRINT RESOLUTION : 4800 (horizontal)*1 x 1200 (vertikal) dpi MAX PAPER PRINT SIZE : Pencetakan Batas Tepi: Hingga 203,2 mm…

Rp 2.365.000 Rp 2.500.000
Tersedia
Diskon
6%

Lenovo IdeaPad Slim 3 14AMN8 82XN006RID | Ryzen 3-7320U | 8GB | 512GB SSD | 14″ FHD TN | Win 11 Home+OHS 2021 |

Processor : AMD Ryzen™ 3 7320U (4C / 8T, 2.4 / 4.1GHz, 2MB L2 / 4MB L3) Display : 14″ FHD (1920×1080) TN 250nits Anti-glare Memory : 8GB Soldered LPDDR5-5500, not upgradable Storage : 512GB SSD M.2 2242 PCIe® 4.0×4 NVMe® Graphics : Integrated AMD Radeon™ 610M Graphics Keyboard : Backlit, English Wireless : Wi-Fi®…

Rp 6.590.000 Rp 7.000.000
Habis
Diskon
2%

Asus Vivobook 16X K3605VC-I535B6T-HM/Intel Core i5-13420H/16GB/512GB SSD/16″ WUXGA IPS 144 Hz/Win 11 Home+OHM 2024+M365/Indie Black

Processor : Intel Core i5-13420H Processor 2.1 GHz (12MB Cache, up to 4.6 GHz, 8 cores, 12 Threads) Display : 16.0-inch WUXGA (1920 x 1200) 16:10 aspect ratio, IPS-level Panel,144Hz refresh rate, 300nits, 45% NTSC color gamut, Anti-glare display Memory : 16GB (8GB DDR4 on board + 8GB DDR4 SO-DIMM) Storage : 512GB M.2 NVMe PCIe 4.0…

Rp 12.733.000 Rp 13.000.000
Tersedia
Diskon
11%

Dongle Wifi EPSON ELPAP 11 – Original

Aligned with 802.11 b/g/n standards Uses USB type A connector Compatible with PC or Mac Able to transmit audio DONGLE WIFI EPSON ELPAP11 untuk SERI EB-X500, EB-X51,EB-W06, EB-W51

Rp 1.600.000 Rp 1.800.000
Tersedia

COMPANY PROFILE YESCOM

Latar Belakang

CV. Yestoya Abadi merupakan suatu perusahaan yang melayani di bidang komputer, kami berpusat di Semarang, dan memiliki cabang di Yogyakarta. Kami mulai beroperasi pada 2 Januari 2011 di Semarang, sedangkan cabang CV. Yestoya Abadi (Yescom) Yogyakarta baru mulai beroperasi pada 22 Maret 2018.

Pengenalan

Kami menyediakan kebutuhan IT Anda dari : Projektor, Laptop, Komputer, Printer, Scanner, Software, hingga aksesoris hardware lainnya. Kami juga menerima layanan jasa service yang akan ditangani oleh teknisi handal dan profesional.

Keunggulan

Semua produk kami terjamin asli, dan bergaransi resmi. Semua produk kami juga sudah termasuk PPN.

Yescom Indonesia - Pusat IT Terpercaya sejak 2011

Yescom Indonesia - Pusat IT Terpercaya sejak 2011

Produk yang sangat tepat, pilihan bagus..!

Berhasil ditambahkan ke keranjang belanja
Lanjut Belanja
Checkout
Produk Quick Order

Pemesanan dapat langsung menghubungi kontak dibawah:

Chat via Whatsapp

Untuk informasi lebih lanjut
Klik disini untuk chat dengan customer support kami

HOTLINE
● online
Service Center
● online
HOTLINE
● online
Halo, perkenalkan saya HOTLINE
baru saja
Ada yang bisa saya bantu?
baru saja